#  @khanacademy Khan Academy Khan Academy posts on YouTube about education, saving, finance, math the most. They currently have [---------] followers and [---] posts still getting attention that total [------] engagements in the last [--] hours. ### Engagements: [------] [#](/creator/youtube::UC4a-Gbdw7vOaccHmFo40b9g/interactions)  - [--] Week [-------] +2.40% - [--] Month [---------] -10% - [--] Months [----------] +16% - [--] Year [----------] +46% ### Mentions: [---] [#](/creator/youtube::UC4a-Gbdw7vOaccHmFo40b9g/posts_active)  - [--] Week [---] +20% - [--] Month [-----] +26% - [--] Months [-----] +15% - [--] Year [-----] +100% ### Followers: [---------] [#](/creator/youtube::UC4a-Gbdw7vOaccHmFo40b9g/followers)  - [--] Week [---------] +0.11% - [--] Month [---------] +0.43% - [--] Months [---------] +2.80% - [--] Year [---------] +5.50% ### CreatorRank: [-------] [#](/creator/youtube::UC4a-Gbdw7vOaccHmFo40b9g/influencer_rank)  ### Social Influence **Social category influence** [finance](/list/finance) 26.49% [technology brands](/list/technology-brands) 1.77% [countries](/list/countries) 1.15% [social networks](/list/social-networks) 1.04% [stocks](/list/stocks) 0.73% [automotive brands](/list/automotive-brands) 0.31% [travel destinations](/list/travel-destinations) 0.21% [celebrities](/list/celebrities) 0.1% [premier league](/list/premier-league) 0.1% [champions league](/list/champions-league) 0.1% **Social topic influence** [education](/topic/education) #1488, [saving](/topic/saving) #550, [finance](/topic/finance) #1490, [math](/topic/math) #1033, [science](/topic/science) #3622, [capital markets](/topic/capital-markets) #28, [check out](/topic/check-out) #2158, [history](/topic/history) 5.94%, [derivatives](/topic/derivatives) #43, [how to](/topic/how-to) 3.75% **Top accounts mentioned or mentioned by** [@khanacademykids](/creator/undefined) [@khanacademylabs](/creator/undefined) [@24x7mathtutor](/creator/undefined) [@intuit](/creator/undefined) [@khanacademymedicine](/creator/undefined) [@khanacademyurdu2020](/creator/undefined) [@khanacademyorg](/creator/undefined) [@palgeducationacademy](/creator/undefined) [@khanacademycomputing9067](/creator/undefined) [@unqcoder](/creator/undefined) [@n0245981024214](/creator/undefined) [@n007557054698](/creator/undefined) [@n0614487377758](/creator/undefined) [@computerz777](/creator/undefined) [@3ddesignpro](/creator/undefined) [@drteethacademy](/creator/undefined) [@ishansharma7390](/creator/undefined) [@skkidssongs](/creator/undefined) [@alilearninghubb](/creator/undefined) [@spillingtheteaonarthistory](/creator/undefined) **Top assets mentioned** [Intuit Inc. (INTU)](/topic/$intu) [Exponent Inc (EXPO)](/topic/$expo) ### Top Social Posts Top posts by engagements in the last [--] hours "Impact on median and mean when removing lowest value example 6th grade Khan Academy Sal thinks through the effects of removing a low outlier from a data set. What will happen to the mean and median Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-mean-median-challenge/e/effects-of-shifting-adding-removing-data-pointutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=-2OOBEBq9-4) 2015-08-04T18:30Z 9.3M followers, 210.4K engagements "Ratios and double number lines Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/visualize-ratios/v/ratios-and-double-number-lines Ratios and double number lines education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=-Dg9da1BGsM) 2017-11-08T18:33Z 9.3M followers, 187.9K engagements "Shorting stock Stocks and bonds Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/stock-and-bonds/shorting-stock/v/shorting-stock What does it mean to short a stock Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/stock-and-bonds/shorting-stock/v/shorting-stock-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here:" [YouTube Link](https://youtube.com/watch?v=-IDmLERenrU) 2009-03-03T15:53Z 9.3M followers, 620.6K engagements "Producer surplus Consumer and producer surplus Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/26/v/producer-surplus Looking at the supply curve as an opportunity cost curve. Understanding the producer surplus as the area between the supply curve and the market price Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=-V-Y5klejSg) 2012-01-09T18:34Z 9.3M followers, 524K engagements "Proving a sequence converges using the formal definition Series AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-series-new/bc-series-optional/v/proving-a-sequence-converges Applying the formal definition of the limit of a sequence to prove that a sequence converges. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=-XRQovTI04Q) 2013-02-15T22:19Z 9.3M followers, 498.8K engagements "Generating equivalent fractions Fractions 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/equivalent-fractions-and-comparing-fractions/imp-equivalent-fractions/v/generating-equivalent-fractions Create equivalent fractions by dividing a fraction model and number line into smaller parts. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=-YpEkExjq2E) 2013-10-07T23:25Z 9.3M followers, 327.8K engagements "Increasing opportunity cost Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/production-possibilities-curve-scarcity-choice-and-opportunity-cost-macro/v/increasing-opportunity-cost Why the opportunity cost may increase as you pursue more rabbits Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=00fgAG6VrRQ) 2011-12-29T20:44Z 9.3M followers, 576.4K engagements "Economic profit vs accounting profit Microeconomics Khan Academy Difference between a firm's accounting and economic profit Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/firm-economic-profit/economic-profit-tutorial/v/depreciation-and-opportunity-cost-of-capitalutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/marginal-utility-tutorial/v/types-of-indifference-curvesutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics" [YouTube Link](https://youtube.com/watch?v=06j_zPdPWOY) 2012-01-19T00:24Z 9.3M followers, 545K engagements "Chain rule Derivative rules AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-2-new/ab-3-1a/v/chain-rule-introduction The chain rule states that the derivative of f(g(x)) is f'(g(x))_g'(x). In other words it helps us differentiate *composite functions*. For example sin(x_) is a composite function because it can be constructed as f(g(x)) for f(x)=sin(x) and g(x)=x_. Using the chain rule and the derivatives of sin(x) and x_ we can then find the derivative of" [YouTube Link](https://youtube.com/watch?v=0T0QrHO56qg) 2018-05-30T19:29Z 9.3M followers, 633.1K engagements "Ways to represent data Data and statistics 6th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/dot-plot/v/ways-to-represent-data Here are a few of the many ways to look at data. Which is your favorite Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/dot-plot/e/intro-to-simple-datautm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=0ZKtsUkrgFQ) 2015-05-27T01:21Z 9.3M followers, 682.8K engagements "Viruses Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/biology-of-viruses/virus-biology/v/viruses Introduction to viruses More free lessons at: http://www.khanacademy.org/videov=0h5Jd7sgQWY" [YouTube Link](https://youtube.com/watch?v=0h5Jd7sgQWY) 2009-10-04T05:18Z 9.3M followers, 1.2M engagements "Congruent and Similar Triangles u07_l1_t3_we2 Congruent and Similar Triangles Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education" [YouTube Link](https://youtube.com/watch?v=0mKmYxuMirE) 2011-11-09T20:24Z 9.3M followers, 182.5K engagements "Synthetic division Polynomial and rational functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra-home/alg-polynomials/alg-synthetic-division-of-polynomials/v/synthetic-division Basic algorithm for Synthetic Division Watch the next lesson: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/synthetic-division/v/synthetic-division-example-2utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=1byR9UEQJN0) 2012-08-01T16:17Z 9.3M followers, 1.4M engagements "Introduction to work and energy Work and energy Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/introduction-to-work-and-energy Introduction to work and energy. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/work-and-energy-part-2utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=2WS1sG9fhOk) 2008-02-17T19:46Z 9.3M followers, 2M engagements "Concrete and abstract nouns The parts of speech Grammar Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/types-of-nouns/v/concrete-and-abstract-nouns The difference between concrete and abstract nouns can be a little fuzzy. Let's start by focusing on the word origins of "concrete" and "abstract" and see if that gives us a way in. Practice this yourself on Khan Academy right now:" [YouTube Link](https://youtube.com/watch?v=3AF_rN-yN-Y) 2016-02-04T00:58Z 9.3M followers, 819.3K engagements "Pixar in a Box Welcome to Pixar in a Box Khan Academy Watch the next lesson: https://www.khanacademy.org/partner-content/pixar/effects/particle/v/effects-overviewutm_source=YT&utm_medium=Desc&utm_campaign=computeranimation Computer Animation on Khan Academy: A collaboration between Pixar Animation Studios and Khan Academy. Sponsored by Disney. Questions/Feedback: piab@khanacademy.org About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle" [YouTube Link](https://youtube.com/watch?v=3Iu1Z0h1i1Y) 2015-08-27T17:34Z 9.3M followers, 1.5M engagements "Trade and tariffs AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/29-international-trade-and-public-policy/v/tariff-and-imports-worked-example When governments impose restrictions on international trade this affects the domestic price of the good and reduces total surplus. One such imposition is a tariff (a tax on imported or exported goods and services). See how a tariff impacts price consumer surplus producer surplus tax revenue and deadweight" [YouTube Link](https://youtube.com/watch?v=3pSysspeCxY) 2018-12-07T20:14Z 9.3M followers, 271.5K engagements "Random variables Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/random-variables-discrete/v/random-variables Basic idea and definitions of random variables Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/e/constructing-probability-distributionsutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Watch the" [YouTube Link](https://youtube.com/watch?v=3v9w79NhsfI) 2012-12-06T17:33Z 9.3M followers, 2.2M engagements "The pre-equilibrium approximation Kinetics AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:kinetics/x2eef969c74e0d802:reaction-mechanisms/e/reaction-mechanisms-ap The pre-equilibrium approximation is used to find the rate law for a reaction with a fast and reversible initial step. In this method we first write the rate law based on the slow (rate-determining) step. Then to eliminate any intermediates from the rate law we use the fast initial step to solve for the" [YouTube Link](https://youtube.com/watch?v=4czm7qIbUjA) 2021-01-30T18:29Z 9.3M followers, 23.5K engagements "Subject-verb agreement Syntax Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/humanities/grammar/syntax-conventions-of-standard-english/subject-verb-agreement-and-pronoun-antecedent-agreement/e/subject-verb-agreement Agreement is the art of making sure that sentence parts agree with one another; you want to make sure that your subjects and verbs match up. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/subject-verb-agreement Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=4fMipjAnlRk) 2016-08-23T20:24Z 9.3M followers, 758.1K engagements "Introduction to production functions AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/the-production-function/v/total-product-marginal-product-and-average-product Production functions describe how output is determined by various inputs. The short run is defined as the period of time in which at least one input is fixed. Anything longer than that is considered the long run. AP(R) Microeconomics on Khan Academy:" [YouTube Link](https://youtube.com/watch?v=4kFLOoA5l4s) 2018-11-20T21:41Z 9.3M followers, 337.4K engagements "Directional derivatives and slope Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/gradient-and-directional-derivatives/v/directional-derivatives-and-slope The directional derivative can be used to compute the slope of a slice of a graph but you must be careful to use a unit vector. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the" [YouTube Link](https://youtube.com/watch?v=4tdyIGIEtNU) 2016-05-12T00:12Z 9.3M followers, 212.9K engagements "Proof: harmonic series diverges Series AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-series-new/bc-10-6/v/harmonic-series-divergent Showing that the harmonic series [--] + _ + _ + _ + . actually diverges using the direct comparison test. This proof is famous for its clever use of algebraic manipulation AP Calculus BC on Khan Academy: Learn AP Calculus BC - everything from AP Calculus AB plus a few extra goodies such as Taylor series to prepare you for the AP Test About Khan" [YouTube Link](https://youtube.com/watch?v=4yyLfrsSXQQ) 2014-08-21T16:43Z 9.3M followers, 217.1K engagements "Vector fields introduction Multivariable calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/thinking-about-multivariable-function/visualizing-vector-valued-functions/v/vector-fields-introduction Vector fields let you visualize a function with a two-dimensional input and a two-dimensional output. You end up with well a field of vectors sitting at various points in two-dimensional space. About Khan Academy: Khan Academy offers practice exercises instructional videos and a" [YouTube Link](https://youtube.com/watch?v=5FWAVmwMXWg) 2016-05-05T22:37Z 9.3M followers, 476.6K engagements "Introduction to the cell Cells High school biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/cell-structures-and-their-functions/v/introduction-to-the-cell Introduction to the cell. View more lessons or practice this subject at https://www.khanacademy.org/science/high-school-biology/hs-cells/hs-basic-cell-structures/v/introduction-to-the-cellutm_source=youtube&utm_medium=desc&utm_campaign=highschoolbiology Khan Academy is a nonprofit organization with the" [YouTube Link](https://youtube.com/watch?v=5KfHxF6Vhps) 2017-11-30T00:20Z 9.3M followers, 317.3K engagements "DNA cloning and recombinant DNA Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/biotechnology/v/dna-cloning-and-recombinant-dna Introduction to DNA cloning. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna-technology/v/hybridization-microarrayutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=5ffl-0OYVQU) 2016-06-02T18:37Z 9.3M followers, 1.2M engagements "Nuclear fission Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:nuclear-physics/x6679aa2c65c01e53:nuclear-fission/v/nuclear-fission Want to explore more Check out the full nuclear physics playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCBNsg2hoAn0ZpFrmNbX4XO During a nuclear fission reaction a fissile nucleus absorbs a neutron and splits into two smaller nuclei. One or more free neutrons are also released. If enough fissile nuclei are located" [YouTube Link](https://youtube.com/watch?v=5jDFqpoTgDo) 2024-02-23T15:28Z 9.3M followers, 115.7K engagements "Shell method for rotating around vertical line AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/old-ap-calculus-ab/ab-applications-definite-integrals/ab-shell-method/v/shell-method-for-rotating-around-vertical-line Introducing the shell method for rotation around a vertical line. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=6Ozz3J-LRrY) 2013-01-09T16:20Z 9.3M followers, 661.2K engagements "Exponential growth functions Exponential and logarithmic functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:exponential-growth-decay/x2f8bb11595b61c86:exponential-vs-linear-growth/v/exponential-growth-functions Exponential Growth Functions Watch the next lesson: https://www.khanacademy.org/math/algebra2/exponential_and_logarithmic_func/exp_growth_decay/v/graphing-exponential-functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=6WMZ7J0wwMI) 2010-04-08T22:26Z 9.3M followers, 1.7M engagements "Mean value theorem Existence theorems AP Calculus AB Khan Academy The Mean Value Theorem states that if a function f is continuous on the closed interval ab and differentiable on the open interval (ab) then there exists a point c in the interval (ab) such that f'(c) is equal to the function's average rate of change over ab. In other words the graph has a tangent somewhere in (ab) that is parallel to the secant line over ab. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=6hri9k_2R8o) 2014-01-13T17:28Z 9.3M followers, 829.5K engagements "The pH scale Acids and bases AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:acids-and-bases/x2eef969c74e0d802:introduction-to-acids-and-bases/v/worked-examples-calculating-hydronium-ion-concentration-and-ph The pH scale is a convenient way to represent the acidity or basicity of a solution. We can calculate the pH of a solution by taking the negative logarithm of the hydronium ion concentration or pH = -logHO. At 25C a solution with a pH less than [--] is acidic a solution" [YouTube Link](https://youtube.com/watch?v=75j1b1l6PWU) 2021-07-31T00:49Z 9.3M followers, 28.2K engagements "pH and pKa relationship for buffers Chemistry Khan Academy How the Henderson-Hasselbalch equation can be used to look at the ratio of conjugate acid and base using relationship between buffer pH and pKa. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffer-capacityutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffer-solution-calculationsutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan" [YouTube Link](https://youtube.com/watch?v=7ZLjzp7thNI) 2016-03-15T03:24Z 9.3M followers, 410.8K engagements "Solving a consecutive integer problem algebraically Linear equations Algebra I Khan Academy The sum of [--] consecutive odd integers is [---]. What are the [--] integers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/e/integer_sumsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=8CJ6Qdcoxsc) 2013-12-05T20:09Z 9.3M followers, 780K engagements "Saddle points Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/applications-of-multivariable-derivatives/optimizing-multivariable-functions-videos/v/saddle-points Just because the tangent plane to a multivariable function is flat it doesn't mean that point is a local minimum or a local maximum. There is a third possibility new to multivariable calculus called a "saddle point"" [YouTube Link](https://youtube.com/watch?v=8aAU4r_pUUU) 2016-06-22T23:02Z 9.3M followers, 233.3K engagements "Slope of a line secant to a curve Taking derivatives Differential Calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/differential-calculus/dc-diff-intro/dc-secant-lines/v/slope-of-a-line-secant-to-a-curve Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/secant-line-slope-tangent/e/slope-of-secant-linesutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=8r8Vp_1iB4k) 2013-08-02T18:50Z 9.3M followers, 477.4K engagements "Direct and inverse variation Rational expressions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra-home/alg-rational-expr-eq-func/alg-direct-and-inverse-variation/v/direct-and-inverse-variation Understanding direct and inverse variation Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/rational-expressions/direct_inverse_variation/e/direct_and_inverse_variationutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=92U67CUy9Gc) 2011-04-14T00:25Z 9.3M followers, 1.4M engagements "Value added approach to calculating GDP AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/value-added-approach-to-calculating-gdp-macroeconomics-khan-academy In this video we learn how a nation's GDP can be calculated by summing up the value added by all the intermediate producers in a nation. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=9G7ZWwlR_tQ) 2017-11-21T08:33Z 9.3M followers, 147.2K engagements "Vietnam War The 20th century World history Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/postwarera/1960s-america/v/vietnam-war Sal gives an overview of the Vietnam War. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/cold-war/v/allende-and-pinochet-in-chileutm_source=YT&utm_medium=Desc&utm_campaign=worldhistory Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=9e9GWdT2pEQ) 2011-04-27T18:32Z 9.3M followers, 705.7K engagements "Radian and degree Unit circle definition of trig functions Trigonometry Khan Academy What a radian is. Converting radians to degrees and vice versa. Watch the next lesson: https://www.khanacademy.org/math/trigonometry/unit-circle-trig-func/Trig-unit-circle/v/unit-circle-definition-of-trig-functions-1utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Missed the previous lesson https://www.khanacademy.org/math/trigonometry/unit-circle-trig-func/radians_tutorial/v/radian-and-degree-conversion-practiceutm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Trigonometry on Khan Academy: Big" [YouTube Link](https://youtube.com/watch?v=9zspW8u6kQM) 2007-08-14T02:37Z 9.3M followers, 893.7K engagements "The Pythagorean theorem intro Right triangles and trigonometry Geometry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-pythagorean-theorem/v/the-pythagorean-theorem Introduction to the Pythagorean Theorem Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/right_triangles_topic/pyth_theor/e/pythagorean_theorem_1utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=AA6RfgP-AHU) 2010-08-09T17:21Z 9.3M followers, 3M engagements "Partial derivatives introduction Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/partial-derivatives/v/partial-derivatives-introduction Partial derivatives tell you how a multivariable function changes as you tweak just one of the variables in its input. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math" [YouTube Link](https://youtube.com/watch?v=AXqhWeUEtQU) 2016-05-12T00:12Z 9.3M followers, 1.3M engagements "Introduction to inflation Inflation - measuring the cost of living Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/price-indices-and-inflation/v/introduction-to-inflation Basics of price inflation and the CPI (consumer price index) Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=AaR1mPrdbTc) 2012-02-14T18:05Z 9.3M followers, 672.7K engagements "DNA Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/dna-and-rna-structure/v/dna-deoxyribonucleic-acid Learn about DNA (deoxyribonucleic acid). Overview of DNA bases complementary base pairing and the structure of the double helix. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/v/molecular-structure-of-dnautm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=AmOO4j0E408) 2014-12-10T17:36Z 9.3M followers, 606.3K engagements "Molecular complete ionic and net ionic equations AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:net-ionic-equations/a/complete-ionic-and-net-ionic-equations In the molecular equation for a reaction all of the reactants and products are represented as neutral molecules (even soluble ionic compounds and strong acids). In the complete ionic equation soluble ionic compounds and strong acids are rewritten as dissociated" [YouTube Link](https://youtube.com/watch?v=BgTpPM9BMuU) 2017-05-04T20:05Z 9.3M followers, 341.6K engagements "Marginal distribution and conditional distribution AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/analyzing-categorical-ap/distributions-two-way-tables/v/marginal-distribution-and-conditional-distribution Marginal distribution and conditional distribution. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=CAXQvTKP8sg) 2016-11-16T19:34Z 9.3M followers, 429.8K engagements "Concentration gradients Membranes and transport Biology Khan Academy Example showing how two different types of particles can move down their concentration gradients in opposite directions. Watch the next lesson: https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/osmosisutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/diffusion-videoutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From" [YouTube Link](https://youtube.com/watch?v=CNP-dCQ-Cmg) 2015-07-30T18:24Z 9.3M followers, 264.6K engagements "Using context clues to figure out new words Reading Khan Academy When you're reading it can be frustrating to encounter words you don't know Try out these strategies and use the word's context to figure out the word's meaning. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can" [YouTube Link](https://youtube.com/watch?v=CiNggzdWkIo) 2020-03-27T15:07Z 9.3M followers, 759.5K engagements "Introduction to experiment design Study design AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/gathering-data-ap/statistics-experiments/a/principles-of-experiment-design Introduction to experiment design. Explanatory and response variables. Control and treatment groups. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=DaBq0naj0YY) 2016-11-11T22:29Z 9.3M followers, 394.6K engagements "Banking [--] Money banking and central banks Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/banking-and-money/v/banking-1 Introduction to how banks make money and the value they (potentially) add to society. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=E-HOz8T6tAo) 2008-10-07T19:53Z 9.3M followers, 1.1M engagements "ANOVA 1: Calculating SST (total sum of squares) Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/analysis-of-variance-anova-library/analysis-of-variance-anova/v/anova-1-calculating-sst-total-sum-of-squares Analysis of Variance [--] - Calculating SST (Total Sum of Squares) Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=EFdlFoHI_0I) 2010-11-12T18:46Z 9.3M followers, 1.1M engagements "Supply and demand curves in foreign exchange AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-foreign-exchange-market/v/supply-and-demand-curves-in-foreign-exchange-ap-macroeconomics-khan-academy In this video learn about how the model of the foreign exchange market is used to represent the determination of exchange rates. AP(R) Macroeconomics on Khan Academy: Macroeconomics is all about how an" [YouTube Link](https://youtube.com/watch?v=EH4g3qbc_vo) 2018-04-24T01:03Z 9.3M followers, 103.2K engagements "Newton Leibniz and Usain Bolt Derivatives introduction AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-2-1/v/newton-leibniz-and-usain-bolt Why we study differential calculus. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-intro/ab-derivative-intuition/v/derivative-as-a-conceptutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=EKvHQc3QEow) 2012-02-16T21:27Z 9.3M followers, 2M engagements "Zeros of polynomials introduction Polynomial graphs Algebra [--] Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-graphs/x2ec2f6f830c9fb89:poly-zeros/v/plot-polynomial-zeros The zeros of a polynomial p(x) are all the x-values that make the polynomial equal to zero. They are interesting to us for many reasons one of which is that they tell us about the x-intercepts of the polynomial's graph. We will also see that they are directly related to the factors of the polynomial. View more lessons or" [YouTube Link](https://youtube.com/watch?v=EtzwLlkoAnM) 2019-07-15T16:27Z 9.3M followers, 62.3K engagements "Polynomial identities introduction Algebra [--] Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-factor/x2ec2f6f830c9fb89:poly-identities/v/analyzing-polynomial-manipulations Polynomial identities are equations that are true for all possible values of the variable. For example x+2x+1=(x+1) is an identity. This introduction video gives more examples of identities and discusses how we prove an equation is an identity. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=EvNKKyhLSpQ) 2019-05-06T23:47Z 9.3M followers, 62.9K engagements "Newton's second law Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:motion-and-forces/x6679aa2c65c01e53:newtons-first-and-second-laws/v/newtons_second_law Want to explore more Check out the full motion forces & momentum playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCiFE95STYVxTZ6Ep402vfa Newton's second law states than an object's acceleration is equal to the net force acting on the object divided by its mass. Newton's first law is a special" [YouTube Link](https://youtube.com/watch?v=EwGGh1dC3kQ) 2024-07-03T15:57Z 9.3M followers, 30.3K engagements "Introduction to price elasticity of demand AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/23/v/determinants-of-price-elasticity-of-demand-ap-microeconomics-khan-academy Economists use the concept of price elasticity of demand to describe how the quantity demanded changes in response to a price change. In this video explore a simple way to calculate the price elasticity of demand how to interpret that calculation and how price elasticity of" [YouTube Link](https://youtube.com/watch?v=FBWJYH8DZ1g) 2018-11-15T19:21Z 9.3M followers, 909.9K engagements "Introduction to circuits and Ohm's law Circuits Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-1 Introduction to electricity circuits current and resistance. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-2utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=F_vLWkkOETI) 2018-01-05T22:00Z 9.3M followers, 836.5K engagements "Ionic bonds AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:molecular-and-ionic-compound-structure-and-properties/x2eef969c74e0d802:types-of-chemical-bonds/v/ionic-bonds Want to explore more Check out the full Chemical bonding playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAYCvTHhMGsNvLS-btVPXRw&si=vZ4FA1B53s-e3sq9 Ionic bonds result from the electrostatic attraction between oppositely charged ions which form when valence electrons are" [YouTube Link](https://youtube.com/watch?v=FaeAurHnQJs) 2019-10-30T20:13Z 9.3M followers, 145.4K engagements "GCF to Factor a Polynomial u12 l1 t1 we2 GCF to Factor a Polynomial u12 l1 t1 we2 GCF to Factor Polynomial u12 l1 t1 we2 GCF to Factor Polynomial" [YouTube Link](https://youtube.com/watch?v=FvS7v6KM1ig) 2011-11-21T21:13Z 9.3M followers, 279.1K engagements "Limit examples (part 1) Limits Differential Calculus Khan Academy Some limit exercises Practice this yourself on Khan Academy right now: https://www.khanacademy.org/e/limits-basics-challengeutm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/limits_topic/old-limits-tutorial/v/limit-examples-part-2utm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=GGQngIp0YGI) 2007-09-30T18:33Z 9.3M followers, 1.7M engagements "Specific heat capacity Khan Academy Want to explore more Check out the full thermodynamics playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HAVatEXAN_W1Lrcuu7yy7_6 If the same amount of heat flows into (or out of) equal masses of different substances their temperatures may not change by the same amount. Specific heat capacity (c) tells us how much heat energy is required to change one unit mass of a substance by one unit of temperature. Specific heat is related to heat (q) the mass of the sample (m) and the change in temperature (T) by the equation q=cmT. Sections: 00:00 -" [YouTube Link](https://youtube.com/watch?v=GNelfJ6IAJw) 2024-07-26T19:34Z 9.3M followers, 47.7K engagements "Introduction to Evolution and Natural Selection Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/natural-selection/natural-selection-ap/v/introduction-to-evolution-and-natural-selection Introduction to evolution variation in a population and natural selection More free lessons at: http://www.khanacademy.org/videov=GcjgWov7mTM About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited" [YouTube Link](https://youtube.com/watch?v=GcjgWov7mTM) 2009-09-21T18:01Z 9.3M followers, 2.5M engagements "Angle basics Angles and intersecting lines Geometry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-angles/v/angle-basics The naming of an angle is related to the line segments that create it. We'll also learn about the angle's vertex. Come on. Let's do this. Watch the next lesson: https://www.khanacademy.org/math/geometry/parallel-and-perpendicular-lines/Angle_basics/v/measuring-angles-in-degreesutm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the" [YouTube Link](https://youtube.com/watch?v=H-de6Tkxej8) 2011-09-21T14:34Z 9.3M followers, 1.4M engagements "Overview of the Middle Ages World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/medieval-times/european-middle-ages-and-serfdom/v/overview-of-the-middle-ages The European Middle Ages (or Medieval Time) is roughly [----] year span of time from the end of the Roman Empire (in the West) to the beginning of the Renaissance. This video gives as overview with maps and touches on the key events like the Great Schism Crusades and Black Death. Practice this yourself on Khan Academy" [YouTube Link](https://youtube.com/watch?v=H5ZJujqa0YQ) 2017-05-08T13:01Z 9.3M followers, 552.2K engagements "Statistics: Standard deviation Descriptive statistics Probability and Statistics Khan Academy Review of what we've learned. Introduction to the standard deviation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/exploring_standard_deviation_1utm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=HvDqbzu0i0E) 2009-01-25T19:17Z 9.3M followers, 2.3M engagements "Relationship between bond prices and interest rates Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/financial-assets-ap/v/relationship-between-bond-prices-and-interest-rates Why bond prices move inversely to changes in interest rate. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=I7FDx4DPapw) 2013-09-29T04:26Z 9.3M followers, 1.9M engagements "Elements and atoms Atoms compounds and ions Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/chemistry-of-life/elements-of-life/v/elements-and-atoms How elements relate to atoms. The basics of how protons electrons and neutrons make up an atom. Watch the next lesson: https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-the-atom/v/atomic-number-mass-number-and-isotopesutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan" [YouTube Link](https://youtube.com/watch?v=IFKnq9QM6_A) 2011-08-01T02:06Z 9.3M followers, 4.3M engagements "Example punnet square for sex-linked recessive trait High school biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-sex-linkage/v/example-punnet-square-for-sex-linked-recessive-trait Example punnet square for sex-linked recessive trait. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=I_DjmWS_9cg) 2018-05-03T19:06Z 9.3M followers, 199.7K engagements "GPT-4o (Omni) math tutoring demo on Khan Academy New GPT-4o (Omni) tutoring demo: My new book BRAVE NEW WORDS: HOW AI WILL REVOLUTIONIZE EDUCATION comes out tomorrow. What is described in this book is happening fast. My son and I filmed this last week at OpenAI that gives a glimpse of this happening on Khan Academy's iPad app (we haven't released this level of tutoring yet but it will come.) :) Based on the comments worth adding that Imran knows this content :) He's just demoing what might happen if someone struggles with it :) online learning online class video class video tutorial online" [YouTube Link](https://youtube.com/watch?v=IvXZCocyU_M) 2024-05-13T20:21Z 9.3M followers, 353.5K engagements "Newton's third law Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:force-pairs-and-momentum/x6679aa2c65c01e53:newtons-third-law/v/newtons_third_law Want to explore more Check out the full motion forces & momentum playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCiFE95STYVxTZ6Ep402vfa Newton's third law states that forces always exist in equal and opposite pairs. One object cannot exert a force on another without experiencing an equal magnitude" [YouTube Link](https://youtube.com/watch?v=J8mLQQZeIH8) 2024-07-05T16:08Z 9.3M followers, 29.9K engagements "You Can Learn Anything Khan Academy is on a mission to unlock the world's potential. Most people think their intelligence is fixed. The science says its not. It starts with knowing you can learn anything. Join the movement at http://khanacademy.org/youcanlearnanything. About Khan Academy Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software deep data analytics and intuitive user interfaces to" [YouTube Link](https://youtube.com/watch?v=JC82Il2cjqA) 2014-08-19T16:42Z 9.3M followers, 8.6M engagements "Fundamental theorem of calculus (Part 2) AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-7/v/connecting-the-first-and-second-fundamental-theorems-of-calculus There are really two versions of the fundamental theorem of calculus and we go through the connection here. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=JbfVrwxuPxM) 2013-02-09T00:23Z 9.3M followers, 408.2K engagements "Carbon as a building block of life Properties of carbon Biology Khan Academy Carbon as a building block of life. Watch the next lesson: https://www.khanacademy.org/science/biology/properties-of-carbon/carbon/v/silicon-based-lifeutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/v/buffer-systemutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From atoms to cells from genes to proteins from populations to ecosystems biology is the study of" [YouTube Link](https://youtube.com/watch?v=JgYlogdtJDo) 2015-07-06T16:15Z 9.3M followers, 210.2K engagements "Origins of agriculture World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/world-history-beginnings/birth-agriculture-neolithic-revolution/v/origins-of-agriculture How why and when did agriculture first emerge and what were its implications on human society Sal explains in an overview. Practice this yourself on Khan Academy right now:" [YouTube Link](https://youtube.com/watch?v=JvBHwVpBCwM) 2017-01-16T19:10Z 9.3M followers, 341.2K engagements "P-values and significance tests AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/p-values-and-significance-tests Learn how to compare a P-value to a significance level to make a conclusion in a significance test. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=KS6KEWaoOOE) 2018-01-17T22:21Z 9.3M followers, 987.5K engagements "Review and intuition why we divide by n-1 for the unbiased sample Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/summarizing-quantitative-data-ap/more-standard-deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance Reviewing the population mean sample mean population variance sample variance and building an intuition for why we divide by n-1 for the unbiased sample variance Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=KkaU2ur3Ymw) 2012-11-21T16:38Z 9.3M followers, 365.4K engagements "Comparing fractions visually and on number line 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/equivalent-fractions-and-comparing-fractions/imp-comparing-fractions/v/comparing-fractions-visually-and-on-number-line Compare fractions by graphing them a number line and drawing fraction models. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=Kt7Dwr7BftE) 2013-10-07T23:24Z 9.3M followers, 240.4K engagements "Introduction to increasing decreasing positive or negative intervals Algebra I Khan Academy Sal discusses there Intervals where function is increasing decreasing postive or negative and their graphical representation. Watch the next lesson: https://www.khanacademy.org/math/algebra/algebra-functions/positive-negative-increasing-decreasing-intervals/v/when-a-function-is-positive-or-negativeutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=KxOp3s9ottg) 2015-06-09T17:06Z 9.3M followers, 678.4K engagements "Product rule proof Taking derivatives Differential Calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-diff-1-optional/v/product-rule-proof Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/product_rule/v/product-ruleutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=L5ErlC0COxI) 2015-03-05T23:54Z 9.3M followers, 192K engagements "Healthcare system overview Health care system Heatlh & Medicine Khan Academy The different roles in the healthcare system. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/health-care-system/v/paying-doctorsutm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Missed the previous lesson https://www.khanacademy.org/science/health-and-medicine/health-care-system/v/health-care-costs-in-us-vs-europeutm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart." [YouTube Link](https://youtube.com/watch?v=LMHxxvbzFqc) 2011-08-30T19:10Z 9.3M followers, 638.9K engagements "How to approximate square roots Numbers and operations 8th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/approximating-square-roots-2 Learn how to find the approximate values of square roots. The examples used in this video are [--] [--] and [---]. The technique used is to compare the squares of whole numbers to the number we're taking the square root of. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=Lh7NMBPFVZw) 2015-04-29T00:06Z 9.3M followers, 472.1K engagements "Lac operon Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/regulation-of-gene-expression-and-cell-specialization/v/lac-operon Overview of gene regulation in the Lac operon. Discussion of CAP cAMP lac repressor and allolactose in regulation of lac operon. education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=LuOaEe89_HE) 2016-06-23T17:43Z 9.3M followers, 891.2K engagements "Welcome to Financial Literacy Financial Literacy Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/college-careers-more/financial-literacy Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can help" [YouTube Link](https://youtube.com/watch?v=Lys4EVugJmk) 2024-08-12T18:33Z 9.3M followers, 36.4K engagements "Graphing a parabola using roots and vertex Quadratic equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/v/graphing-a-parabola-using-roots-and-vertex Multiple examples graphing parabolas using roots and vertices Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=MQtsRYPx3v0) 2013-08-06T21:08Z 9.3M followers, 914.2K engagements "Division [--] Multiplication and division Arithmetic Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/arithmetic-home/multiply-divide/division-intro/v/division-1 Introduction to division Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/delightful_division/e/division_0.5utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=MTzTqvzWzm8) 2010-01-20T21:08Z 9.3M followers, 1.3M engagements "Communism The 20th century World history Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/postwarera/postwar-era/v/communism Overview of Communism and Marxist-Leninist states. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/cold-war/v/korean-war-overviewutm_source=YT&utm_medium=Desc&utm_campaign=worldhistory Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=MmRgMAZyYN0) 2011-05-06T15:26Z 9.3M followers, 1.1M engagements "Integration with partial fractions AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-12/v/integration-with-partial-fractions Finding the integral of a rational function using linear partial fraction decomposition. View more lessons or practice this subject at https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-12/v/integration-with-partial-fractionsutm_source=youtube&utm_medium=desc&utm_campaign=apcalculusbc Khan Academy is a" [YouTube Link](https://youtube.com/watch?v=Mt92Ozs7aJg) 2018-06-15T18:33Z 9.3M followers, 137.5K engagements "Polynomial remainder theorem Polynomial and rational functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-div/x2ec2f6f830c9fb89:remainder-theorem/v/polynomial-remainder-theorem Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/polynomial-remainder-theorem-tutorial/e/remainder-theorem-of-polynomialsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=MwG6QD352yc) 2014-11-25T17:56Z 9.3M followers, 645.2K engagements "IP addresses and DNS Internet [---] Computer Science Khan Academy The co-founder of the Internet Vint Cerf and software engineer Paola Mejia take us through the ins and outs of how networks talk to each other. Watch the next lesson: https://www.khanacademy.org/computing/computer-science/internet-intro/internet-works-intro/v/the-internet-packet-routers-and-reliabilityutm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=MwxMsaFFycg) 2019-04-23T20:46Z 9.3M followers, 433.4K engagements "Atomic spectra Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:electromagnetic-radiation/x6679aa2c65c01e53:particle-behaviors-of-em-radiation/v/atomic_spectra Want to explore more Check out the full Atomic models and periodicity playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HD2AZcy7Pe8mHAiO5UG2WKt Electrons only exist at specific discrete energy levels in an atom. If an electron absorbs a photon with energy equal to the difference between two" [YouTube Link](https://youtube.com/watch?v=N0lBsW3ZzN8) 2024-06-20T20:26Z 9.3M followers, 205.9K engagements "Derivative as a concept Derivatives introduction AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-2-1/v/derivative-as-a-concept Why we study differential calculus. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-intro/ab-derivative-intuition/v/derivative-as-a-conceptutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=N2PpRnFqnqY) 2017-07-19T17:12Z 9.3M followers, 1.3M engagements "The scientific method Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/intro-to-biology/science-of-biology/a/the-science-of-biology The scientific method education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=N6IAzlugWw0) 2016-03-15T18:17Z 9.3M followers, 1.4M engagements "Operons and gene regulation in bacteria Looking at how regulatory DNA sequences can repress or promote gene transcription (particularly in bacteria operons). education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=N7_K0yl0Egk) 2016-06-20T18:47Z 9.3M followers, 385K engagements "Introduction to solubility equilibria Equilibrium AP Chemistry Khan Academy The solubility product constant K is an equilibrium constant that reflects the extent to which an ionic compound dissolves in water. For compounds that dissolve to produce the same number of ions we can directly compare their K values to determine their relative solubilities. If we know the solubility of a salt we can use this information to calculate the K value for the compound. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=N9a2r01ToZk) 2021-07-08T18:01Z 9.3M followers, 91.9K engagements "Adding and subtracting negative numbers Pre-Algebra Khan Academy Learn how to add and subtract negative numbers. The problems solved in this video are [--] - [--] = [---] and [---] - [--] = [---] and [---] + [--] = [--] and [--] - (-3) = [--] and [---] - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/add-subtract-negatives-pre-alg/e/adding_negative_numbersutm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=NQSN00zL5gg) 2015-08-10T22:23Z 9.3M followers, 2.1M engagements "Directional derivative Directional derivatives tell you how a multivariable function changes as you move along some vector in its input space. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art adaptive technology that identifies strengths and learning gaps. We've also partnered" [YouTube Link](https://youtube.com/watch?v=N_ZRcLheNv0) 2016-05-12T00:12Z 9.3M followers, 686K engagements "Molecular polarity Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:electronegativity-and-bond-polarity/v/molecular-polarity Want to explore more Check out the full States of matter playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAcadC8xfE0VtGhfHdrECNO&si=aLyVfcDx3Xp257S6 Molecular polarity is determined not just by individual polar bonds but by the molecules 3D shape. Even if bonds are polar the overall molecule may" [YouTube Link](https://youtube.com/watch?v=NfXITji_xw4) 2024-09-12T18:04Z 9.3M followers, 40.6K engagements "Changes in Market Equilibrium Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/market-equilibrium-disequilibrium-and-changes-in-equilibrium/v/changes-in-market-equilibrium How the equilibrium price or quantity might change due to changes in supply or demand More free lessons at: http://www.khanacademy.org/videov=NgPqyM3I_8o" [YouTube Link](https://youtube.com/watch?v=NgPqyM3I_8o) 2012-01-02T20:39Z 9.3M followers, 722.3K engagements "Change in supply versus change in quantity supplied AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/supply/v/change-in-supply-versus-change-in-quantity-supplied Change in supply versus change in quantity supplied. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=NrlF8mMHfLE) 2017-11-21T07:45Z 9.3M followers, 127.2K engagements "Introduction to Grammar Grammar Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/welcome-to-grammar-subject/v/introduction-to-grammar Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language its rules and its conventions. By understanding English by speaking it by writing it by reading this very sentence you are a grammarian yourself Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=O-6q-siuMik) 2016-03-23T00:12Z 9.3M followers, 2.2M engagements "Elements and atomic number Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:atomic-structure/v/elements-and-atomic-number Want to explore more Check out the full Atoms isotopes and ions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HBSf5CVmr7BQ-DAayIsE71N&si=n5y_agsm1Gc3CdM- Atoms come in a variety of types called elements each with a unique set of physical and chemical properties. An element is" [YouTube Link](https://youtube.com/watch?v=OQi8FwPSu5o) 2023-12-13T22:25Z 9.3M followers, 36.6K engagements "Economic profit for a monopoly Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/imperfect-competition/ap-monopolies-tutorial/v/monopolist-optimizing-price-part-1-total-revenue Learn about how to represent a monopoly market graphically in this video. Topics covered include the profit-maximizing quantity pricing decisions and deadweight loss associated with monopolies. Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such" [YouTube Link](https://youtube.com/watch?v=PEFEnss--mU) 2019-03-15T21:29Z 9.3M followers, 351.5K engagements "Interest rate swap [--] Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-1 The basic dynamic of an interest rate swap. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous" [YouTube Link](https://youtube.com/watch?v=PLjyj1FJqig) 2011-09-16T22:40Z 9.3M followers, 588.1K engagements "Transformation matrix with respect to a basis Linear Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/linear-algebra/alternate-bases/change-of-basis/v/lin-alg-transformation-matrix-with-respect-to-a-basis Finding the transformation matrix with respect to a non-standard basis Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/alternate_bases/change_of_basis/v/lin-alg-alternate-basis-tranformation-matrix-exampleutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Missed the" [YouTube Link](https://youtube.com/watch?v=PiuhTj0zCf4) 2009-11-11T21:21Z 9.3M followers, 510.3K engagements "Hedge funds intro Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/investment-vehicles-tutorial/hedge-funds/v/hedge-funds-intro Overview of how hedge funds are different than mutual funds. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/investment-vehicles-tutorial/hedge-funds/v/hedge-fund-structure-and-feesutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the" [YouTube Link](https://youtube.com/watch?v=Qb7tbWuDc2U) 2011-04-19T00:05Z 9.3M followers, 921K engagements "Statistics: Sample variance Descriptive statistics Probability and Statistics Khan Academy Using the variance of a sample to estimate the variance of a population Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variablesutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous lesson https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-populationutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Probability and" [YouTube Link](https://youtube.com/watch?v=Qf3RMGXR-h8) 2009-01-23T05:05Z 9.3M followers, 940.7K engagements "Linear combinations and span Vectors and spaces Linear Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/linear-algebra/vectors-and-spaces/linear-combinations/v/linear-combinations-and-span Understanding linear combinations and spans of vectors Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/linear_independence/v/linear-algebra-introduction-to-linear-independenceutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=Qm_OS-8COwU) 2009-10-08T23:54Z 9.3M followers, 1.5M engagements "Income elasticity of demand AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/25/e/cross-and-income-elasticity-of-demand Elasticities can be calculated for more than just price elasticity of supply or price elasticity of demand. For example income elasticity of demand as a measure of how quantity demanded changes in response to income. AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such" [YouTube Link](https://youtube.com/watch?v=RDcf5L6o0mI) 2018-11-21T00:32Z 9.3M followers, 218K engagements "Cancer Cells MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/cellular-molecular-biology/stem-cells-and-cancer/v/cancer An introduction to what cancer is and how it is the by-product of broken DNA replication. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-development/v/stem-cellsutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=RZhL7LDPk8w) 2009-09-30T01:34Z 9.3M followers, 953.8K engagements "Components of GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/components-of-gdp Thinking about how different types of expenditures would be accounted for in GDP Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=Rgr1vRjxzFg) 2012-02-04T23:57Z 9.3M followers, 620.5K engagements "Dependent & independent variables 6th grade Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-dependent-independent/e/dependent-and-independent-variables Sal introduces independent and dependent variables: how to identify the independent/dependent variable in a given setting and how we write equations with the dependent variable by itself. online learning online class video class video tutorial online education online learning online class video class video tutorial" [YouTube Link](https://youtube.com/watch?v=SGC_d7O7_Eg) 2022-01-14T22:30Z 9.3M followers, 154.8K engagements "Profit maximization AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/profit-maximization/v/profit-maximization-worked-example Learn about the profit maximization rule and how to implement this rule in a graph of a perfectly competitive firm in this video. AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such as people households and firms. Learn how" [YouTube Link](https://youtube.com/watch?v=SON0BtLMUHw) 2018-12-19T01:51Z 9.3M followers, 327.6K engagements "Multiplying: [--] digits times [--] digit (with carrying) Arithmetic Khan Academy We use something called the standard method which involves writing the larger of the two numbers on top. Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/multi_digit_multiplication/e/multiplication_2utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=SfxULALs_u8) 2015-08-14T18:59Z 9.3M followers, 815.5K engagements "Mitosis Cells MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/v/mitosis Mitosis is how cells divide Learn what happens in all the phases of mitosis: prophase metaphase anaphase and telophase. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/comparing-mitosis-and-meiosisutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=TKGcfbyFXsw) 2015-05-04T23:05Z 9.3M followers, 1.3M engagements "Transfer pricing and tax havens Taxes Finance & Capital Markets Khan Academy How a corporation can set up a tax haven and use it through transfer pricing. Created by Sal Khan. Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/taxes-topic/corporate-taxation/v/is-limited-liability-or-double-taxation-fairutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: In exchange for being treated as a person-like-legal entity (and the limited liability this gives for its owners) most" [YouTube Link](https://youtube.com/watch?v=TLSYwkWCIzA) 2012-10-08T20:31Z 9.3M followers, 417.9K engagements "Balancing chemical equations Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-reactions/x2613d8165d88df5e:balancing-chemical-equations/v/balancing-chemical-equations-introduction Want to explore more Check out the full Chemical reactions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HCMPYDKDWzckresmNj5geHf&si=5k_qLv5ROTvEOH3R Chemical equations use formulas and symbols to represent chemical reactions. Since matter cannot be created or" [YouTube Link](https://youtube.com/watch?v=TUuABq95BBM) 2014-11-19T19:32Z 9.3M followers, 1.9M engagements "Cell parts and their functions Cells and organisms Middle school biology Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cell-parts-and-functions/v/comparing-animal-and-plant-cellsmodal=1 Within cells special structures are responsible for particular functions and the cell membrane forms the boundary that controls what enters and leaves the cell. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone" [YouTube Link](https://youtube.com/watch?v=TVxtlfUwIY0) 2022-02-28T22:28Z 9.3M followers, 144.2K engagements "Generalizing the washer method Applications of definite integrals AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-applications-of-integration-new/ab-8-11/v/generalizing-the-washer-method Looking at the example from the last video in a more generalized way. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=Thvc2s9aUP4) 2013-01-08T15:53Z 9.3M followers, 480.4K engagements "Multivariable functions Multivariable calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/thinking-about-multivariable-function/introduction-to-multivariable-calculus/v/multivariable-functions An introduction to multivariable functions and a welcome to the multivariable calculus content as a whole. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside" [YouTube Link](https://youtube.com/watch?v=TrcCbdWwCBc) 2016-05-05T22:37Z 9.3M followers, 1.5M engagements "LearnStorm Growth Mindset: How to write a SMART goal Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/college-careers-more/learnstorm-growth-mindset-activities-us/elementary-and-middle-school-activities/setting-goals/a/activity-5-part-3-supercharge-your-growth Explore growth mindset with Thinky Pinky as he takes you through how to write a SMART goal. This video is part of the Growth Mindset Curriculum available with LearnStorm a back-to-school program aimed at helping students start the school year strong. The growth mindset curriculum helps" [YouTube Link](https://youtube.com/watch?v=U4IU-y9-J8Q) 2018-08-10T17:21Z 9.3M followers, 1.2M engagements "Fourier Series introduction Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-ac-analysis/v/ee-eulers-formula Fourier Series introduction education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=UKHBWzoOKsY) 2016-08-04T16:58Z 9.3M followers, 1.5M engagements "Prisoners' dilemma and Nash equilibrium Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/imperfect-competition/oligopoly-and-game-theory/v/prisoners-dilemma-and-nash-equilibrium Why two not-so-loyal criminals would want to snitch each other out Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=UkXI-zPcDIM) 2012-01-27T21:10Z 9.3M followers, 1.3M engagements "Introduction to utility AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/basic-economic-concepts/cost-benefit-analysis/e/cost-benefit-analysis In this video the economic concepts of utility and marginal utility are introduced. online learning online class video class video tutorial online education utility marginal utility total utility AP Microeconomics Microeconomics Unit 1: Basic Economic concepts [---] Cost Benefit Analysis online learning online class video class" [YouTube Link](https://youtube.com/watch?v=UnX8RPB5vFM) 2018-10-19T19:51Z 9.3M followers, 257.6K engagements "Budget Line Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/utility-maximization-with-indifference-curves/v/budget-line What I can buy with my income More free lessons at: http://www.khanacademy.org/videov=Uq5Wzs96tiw" [YouTube Link](https://youtube.com/watch?v=Uq5Wzs96tiw) 2012-01-17T17:51Z 9.3M followers, 451.3K engagements "Implied volatility Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/implied-volatility Created by Sal Khan. Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/introduction-to-the-black-scholes-formulautm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: Interest" [YouTube Link](https://youtube.com/watch?v=VIHldsSmASU) 2013-07-29T18:59Z 9.3M followers, 292.7K engagements "Algebra: Solving Inequalities Solving linear inequalities. Algebra linear inequality equations less greater than CC_6_EE_5 CC_6_EE_8 CC_7_EE_4_b Algebra linear inequality equations less greater than CC_6_EE_5 CC_6_EE_8 CC_7_EE_4_b" [YouTube Link](https://youtube.com/watch?v=VgDe_D8ojxw) 2007-03-06T00:48Z 9.3M followers, 1.8M engagements "Law of large numbers Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/expected-value-lib/v/law-of-large-numbers Introduction to the law of large numbers Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/binomial_distribution/v/binomial-distributionutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=VpuN8vCQ--M) 2009-03-05T17:09Z 9.3M followers, 674.4K engagements "Introduction to function inverses Functions and their graphs Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow:https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:inverse-functions-intro/v/introduction-to-function-inverses Introduction to Function Inverses Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/functions_and_graphs/function_inverses_2/e/inverses_of_functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=W84lObmOp8M) 2010-07-16T18:12Z 9.3M followers, 1.3M engagements "Second derivatives Advanced derivatives AP Calculus AB Khan Academy Sal finds the second derivative of y=6/x_. Second derivative is the derivative of the derivative of y. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivatives-advanced/ab-second-derivatives/e/second-derivativesutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivatives-advanced/ab-implicit-diff/v/implicit-differentiation-1utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB" [YouTube Link](https://youtube.com/watch?v=WC5VYKI807Q) 2016-07-26T00:31Z 9.3M followers, 272K engagements "Hinduism Introduction: Core ideas of Brahman Atman Samsara and Moksha History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/world-history-beginnings/ancient-india/v/hinduism-introduction-core-ideas-of-brahman-atman-samsara-and-moksha Hinduism is one of the oldest and largest religions in the world. It is also one of the most diverse in terms of practice. This video gives an overview of the central spiritual ideas of Brahman Atman Samsara and Moksha. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=WhTpJxlJi2I) 2017-03-07T06:19Z 9.3M followers, 777.3K engagements "Valence electrons and ionic compounds AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:valence-electrons-and-ionic-compounds/v/valence-electrons-and-ionic-compounds Want to explore more Check out the full Chemical bonding playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAYCvTHhMGsNvLS-btVPXRw&si=Y3r07zffIQjVpcET When forming ions elements typically gain or lose the minimum number of electrons" [YouTube Link](https://youtube.com/watch?v=XPnlIEk7XrU) 2019-09-13T21:23Z 9.3M followers, 50.1K engagements "Scale drawings Geometry 7th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-scale-drawings/v/scaled-drawings-worked-examples Sal finds a missing side length in a scale drawing when given either a set of corresponding side lengths or one side length and the scale factor. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=XUOPGqKGbjk) 2018-05-31T18:46Z 9.3M followers, 221.5K engagements "Equivalent expressions with distribution and negative numbers 7th grade Khan Academy Learn how to identify equivalent expressions using your knowledge of the distributive property and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-factoring/e/equiv-expressions-w-neg-and-distutm_source=YT&utm_medium=Desc&utm_campaign=7thgrade Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=Xtcylk5r0g8) 2015-08-04T23:00Z 9.3M followers, 140.7K engagements "Long-run economic profit for perfectly competitive firms Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/ap-perfect-competition/v/long-run-supply-curve-in-constant-cost-perfectly-competitive-markets A firm in a perfectly competitive market might be able to earn economic profit in the short run but not in the long run. Learn about the process that brings a firm to normal economic profits in this video. AP(R)" [YouTube Link](https://youtube.com/watch?v=Xx5-O8kDMvU) 2019-03-12T19:06Z 9.3M followers, 243.1K engagements "The carbon cycle Middle school Earth and space science Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:climate-change/x3cd7525f789ab4f1:the-carbon-cycle/v/the-carbon-cycle Carbon moves through the environment in a continuous cycle shifting between reservoirs such as plants animals soil air water and rocks. Key processesphotosynthesis respiration decomposition and combustiondrive this movement. While the biological carbon cycle happens quickly the geological carbon" [YouTube Link](https://youtube.com/watch?v=XynPVsE1fd4) 2025-06-24T16:55Z 9.3M followers, 44.7K engagements "Solving equations with the distributive property Linear equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:linear-equations-parentheses/v/solving-equations-with-the-distributive-property Solving Equations with the Distributive Property Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=YZBStgZGyDY) 2010-06-11T19:15Z 9.3M followers, 1M engagements "Normative and positive statements Basic economics concepts AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/introduction-to-the-economic-way-of-thinking-macro/v/normative-and-positive-statements An introduction to normative statements and positive statements in economics. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=YtX6SGw7E3c) 2017-08-11T21:44Z 9.3M followers, 286.3K engagements "Roman Empire and Christianity World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/ancient-medieval/christianity/v/roman-empire-and-christianity Overview of the changing relationship between the Roman Empire and Christianity from the time of Jesus to the reign of Theodosius. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/world-history/ancient-medieval/christianity/e/key-concepts--roman-culture Missed the previous lesson Watch here:" [YouTube Link](https://youtube.com/watch?v=Z-Xzp-WMv4E) 2017-01-14T02:21Z 9.3M followers, 352.9K engagements "Income and expenditure views of GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/income-and-expenditure-views-of-gdp Looking at a simple model of an economy Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/gdp-topic/GDP-components-tutorial/v/components-of-gdputm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics Missed the" [YouTube Link](https://youtube.com/watch?v=Z9b8nnvpim0) 2012-02-04T23:33Z 9.3M followers, 458.6K engagements "Gradient and contour maps Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/gradient-and-directional-derivatives/v/gradient-and-contour-maps Gradient vectors always point perpendicular to contour lines. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics" [YouTube Link](https://youtube.com/watch?v=ZTbTYEMvo10) 2016-05-12T00:57Z 9.3M followers, 229.1K engagements "Solving unit rates problem Ratios proportions units and rates Pre-Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-rates/v/finding-unit-rates Finding a unit rate is a skill often required in real life. How fast is that plane flying How many lawns can you mow in an afternoon You see with our knowledge of ratios and fractions we can now solve unit rates problems like this. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=Zm0KaIw-35k) 2010-08-11T13:24Z 9.3M followers, 1.6M engagements "The elements of a story Reading Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/ela/cc-2nd-reading-vocab/xfb4fc0bf01437792:cc-2nd-the-moon/xfb4fc0bf01437792:close-reading-fiction/v/a-storys-point-of-view-reading Did you know that many stories have a shape Let's discuss what that means as we explore the parts of a story. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects" [YouTube Link](https://youtube.com/watch?v=Zr1xLtSMMLo) 2020-04-10T20:29Z 9.3M followers, 1.2M engagements "Gradient and graphs Learn how the gradient can be thought of as pointing in the "direction of steepest ascent". This is a rather important interpretation for the gradient. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art adaptive technology that identifies strengths and" [YouTube Link](https://youtube.com/watch?v=_-02ze7tf08) 2016-05-12T00:12Z 9.3M followers, 462.5K engagements "DNA An introduction to DNA More free lessons at: http://www.khanacademy.org/videov=_-vZ_g7K6P0 About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education including math biology chemistry physics economics finance history" [YouTube Link](https://youtube.com/watch?v=_-vZ_g7K6P0) 2009-09-22T18:22Z 9.3M followers, 1.8M engagements "Consumer surplus introduction Consumer and producer surplus Microeconomics Khan Academy Consumer surplus as difference between marginal benefit and price paid Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/consumer-producer-surplus/consumer-producer-surplus-tut/v/total-consumer-surplus-as-areautm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=_6kwhF6hoqQ) 2012-01-05T23:49Z 9.3M followers, 590.5K engagements "Introduction to vertex form of a quadratic Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:vertex-form/v/vertex-form-intro Introduction to vertex form of a quadratic education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=_QqhuLixNEk) 2017-11-28T00:14Z 9.3M followers, 353.6K engagements "CNN: Understanding the Crisis Video of Sal on CNN on October 10th discussing the credit crisis and a potential solution to it. More free lessons at: http://www.khanacademy.org/videov=_ZAlj2gu0eM" [YouTube Link](https://youtube.com/watch?v=_ZAlj2gu0eM) 2008-10-28T20:23Z 9.3M followers, 262K engagements "Introduction to integral calculus Accumulation and Riemann sums AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-1/v/introduction-to-integral-calculus The basic idea of Integral calculus is finding the area under a curve. To find it exactly we can divide the area into infinite rectangles of infinitely small width and sum their areascalculus is great for working with infinite things This idea is actually quite rich and it's also tightly related to" [YouTube Link](https://youtube.com/watch?v=__Uw1SXPW7s) 2017-09-07T00:09Z 9.3M followers, 910.7K engagements "Credit default swaps Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/credit-crisis/v/credit-default-swaps Introduction to credit default swaps. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/credit-default-swaps-tut/v/credit-default-swaps-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here:" [YouTube Link](https://youtube.com/watch?v=a1lVOO9Y080) 2008-09-28T19:39Z 9.3M followers, 1.2M engagements "Calculus: Derivatives [--] Taking derivatives Differential Calculus Khan Academy More intuition of what a derivative is. Using the derivative to find the slope at any point along f(x)=x2 Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/visualizing-derivatives-tutorial/v/derivative-intuition-moduleutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=ay8838UZ4nM) 2007-10-03T17:50Z 9.3M followers, 1.3M engagements "Introduction to ratios Ratios rates and percentages 6th grade Khan Academy Learn how to find the ratio between two things. In this video we find the ratio of apples to oranges. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/cc-6th-ratios-intro/e/representing-ratiosutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=bIKmw0aTmYc) 2014-03-25T19:42Z 9.3M followers, 1.5M engagements "Integration by parts: x_cos(x)dx AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-11/v/antiderivative-of-xcosx-using-integration-by-parts Worked example of finding an integral using a straightforward application of integration by parts. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=bZ8YAHDTFJ8) 2013-01-28T16:53Z 9.3M followers, 622K engagements "Vector intro for linear algebra Vectors and spaces Linear Algebra Khan Academy Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/e/scaling_vectorsutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/v/real-coordinate-spacesutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity Ever try to visualize in" [YouTube Link](https://youtube.com/watch?v=br7tS1t2SFE) 2015-06-17T20:01Z 9.3M followers, 1.2M engagements "How to interpret a histogram Data and statistics 6th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/histograms/v/interpreting-histograms Learn how to read histograms which summarize data by sorting it into buckets. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/histograms/e/creating-histogramsutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=c02vjunQsJM) 2015-02-05T01:09Z 9.3M followers, 490.1K engagements "Introduction to waves Mechanical waves and sound Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mechanical-waves/v/introduction-to-waves Introduction to transverse and longitudinal waves. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mechanical-waves/v/amplitude-period-frequency-and-wavelength-of-periodic-wavesutm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=c38H6UKt3_I) 2010-03-15T20:45Z 9.3M followers, 1.3M engagements "Introduction to rational and irrational numbers Algebra I Khan Academy Learn what rational and irrational numbers are and how to tell them apart. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/irrational-numbers/e/recognizing-rational-and-irrational-numbersutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=cLP7INqs3JM) 2013-12-23T19:58Z 9.3M followers, 2.4M engagements "Real and nominal return Inflation Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/nominal-v-real-interest-rates-ap/v/real-and-nominal-return Inflation and real and nominal return. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=cNm196bVE5A) 2011-07-21T22:59Z 9.3M followers, 253.2K engagements "Fluid mosaic model of cell membranes Biology Khan Academy Fluid mosaic model of cell membranes; the role of phospholipids proteins glycoproteins cholesterol and glycolipids in cell membranes. Watch the next lesson: https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/diffusion-videoutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/structure-of-a-cell/cytoskeleton-junctions-and-extracellular-structures/v/plant-cell-wallsutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on" [YouTube Link](https://youtube.com/watch?v=cP8iQu57dQo) 2015-07-30T16:19Z 9.3M followers, 482.7K engagements "Idea behind hypothesis testing Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/examples-of-null-and-alternative-hypotheses Idea behind hypothesis testing. Null and alternative hypotheses. online learning online class video class video tutorial online education online learning online class video class video tutorial online education" [YouTube Link](https://youtube.com/watch?v=cn4S3QqEBRg) 2020-01-17T19:39Z 9.3M followers, 99.8K engagements "Contradiction Vocabulary Khan Academy Lets explore the meaning and origin of the word contradiction. Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can help their students develop the skills" [YouTube Link](https://youtube.com/watch?v=czpweFYym9g) 2025-11-13T17:10Z 9.3M followers, 13.8K engagements "Probability with discrete random variable example Random variables AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:probability-distributions-introduction/v/example-analyzing-discrete-probability-distribution Example analyzing discrete probability distribution. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=d2STHFVHGAg) 2017-07-14T00:02Z 9.3M followers, 152.3K engagements "Riemann approximation introduction Accumulation and Riemann sums AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-2/v/simple-riemann-approximation-using-rectangles Approximating the area under a curve using some rectangles. This is called a "Riemann sum". Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=dEAk0BHBYCM) 2013-01-24T16:34Z 9.3M followers, 795.9K engagements "Discrete and continuous random variables Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/random-variables-discrete/v/discrete-and-continuous-random-variables Defining discrete and continuous random variables. Working through examples of both discrete and continuous random variables. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=dOr0NKyD31Q) 2012-12-06T18:12Z 9.3M followers, 2.4M engagements "More on Nash equilibrium Game theory and Nash equilibrium Microeconomics Khan Academy Looking more closely at the definition of Nash Equilibrium Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/nash-equilibrium-tutorial/cartels-cheat-tutorial/v/why-parties-to-cartels-cheatutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=ewu_7Dmj_18) 2012-01-27T21:32Z 9.3M followers, 459K engagements "The common-ion effect Equilibrium AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:equilibrium/x2eef969c74e0d802:solubility-equilibria/v/solubility-and-the-ph-of-the-solution The solubility of an ionic compound is decreased by the presence of a common ion (an ion that is also present in the compound); this is known as the common-ion effect. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=fI3U9T7LigY) 2021-07-08T18:03Z 9.3M followers, 101.2K engagements "National savings and investment Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/v/national-savings-and-investment-ap-macroeconomics-khan-academy The market for loanable funds brings savers and borrowers together. We can also represent the same idea using a mathematical model. In this video learn about the savings and investment identity. AP(R) Macroeconomics on Khan Academy:" [YouTube Link](https://youtube.com/watch?v=fToDs5nd_rE) 2018-04-11T23:18Z 9.3M followers, 123.8K engagements "Commodity money vs. Fiat money Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/definition-measurement-and-functions-of-money-ap/v/commodity-money-vs-fiat-money A brief look at how money has evolved over time from being printed on valuable substances (commodity money) to merely representing those valuable substances (commodity-backed money) to not representing anything at all (fiat money). Created by Grant" [YouTube Link](https://youtube.com/watch?v=fs12fX407GU) 2016-06-20T23:44Z 9.3M followers, 283.7K engagements "Enthalpy Thermodynamics Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/enthalpy Understanding why enthalpy can be viewed as "heat content" in a constant pressure system. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/chem19-calorimetryutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=fucyI7Ouj2c) 2009-09-24T21:28Z 9.3M followers, 1.5M engagements "US History Overview 1: Jamestown to the Civil War Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/history-survey/us-history-survey/v/us-history-overview-1-jamestown-to-the-civil-war Jamestown to the Civil War. Correction: Jamestown was the first successful ENGLISH settlement in what is now the United States. The Spanish actually settled St. Augustine Florida in [----]. More free lessons at: http://www.khanacademy.org/videov=ghgPq2wjQUQ About Khan Academy: Khan Academy is a nonprofit with a mission to" [YouTube Link](https://youtube.com/watch?v=ghgPq2wjQUQ) 2011-04-23T00:00Z 9.3M followers, 1.2M engagements "Keynesian economics Aggregate demand and aggregate supply Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/macroeconomics-keynesian-economics-and-its-critiques/v/keynesian-economics Contrasting Keynesian and Classical Thinking Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=hPkh8kOldU4) 2012-03-19T19:31Z 9.3M followers, 1.4M engagements "Introduction to the normal distribution Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/modeling-distributions-of-data/more-on-normal-distributions/v/introduction-to-the-normal-distribution Exploring the normal distribution Watch the next lesson: https://www.khanacademy.org/math/probability/statistics-inferential/normal_distribution/v/normal-distribution-excel-exerciseutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous" [YouTube Link](https://youtube.com/watch?v=hgtMWR3TFnY) 2009-04-29T01:24Z 9.3M followers, 1.3M engagements "Scarcity Basic economics concepts Economics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/introduction-to-the-economic-way-of-thinking-macro/v/scarcity Introduction to scarcity as the notion underpinning the study of economics. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=iy-fhpbTH9E) 2017-08-07T18:14Z 9.3M followers, 408.1K engagements "Chi-square statistic for hypothesis testing AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/chi-square-statistic Chi-square statistic for hypothesis testing (chi-square goodness-of-fit test). View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/chi-square-statisticutm_source=youtube&utm_medium=desc&utm_campaign=apstatistics AP Statistics on Khan Academy:" [YouTube Link](https://youtube.com/watch?v=jABsbNBPXIk) 2018-04-16T23:06Z 9.3M followers, 168.9K engagements "Unit vectors Vectors Precalculus Khan Academy Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/precalculus/vectors-precalc/magnitude-direction/e/unit-vectorutm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Watch the next lesson: https://www.khanacademy.org/math/precalculus/vectors-precalc/magnitude-direction/v/scaling-unit-vectorutm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=jCkhbKFZgLk) 2014-03-11T22:19Z 9.3M followers, 802.8K engagements "Greatest common factor explained Factors and multiples Pre-Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-gcf/v/greatest-common-divisor Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=jFd-6EPfnec) 2006-11-18T00:53Z 9.3M followers, 1.7M engagements "To two and too Frequently confused words Usage Grammar Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/usage-and-style/frequently-confused-words/v/to-two-too Another troublesome triad "to" "two" and "too". Let's set these frequently-confused words straight education online learning learning lessons education online learning learning lessons" [YouTube Link](https://youtube.com/watch?v=joTuAvMQ9vE) 2017-03-04T00:15Z 9.3M followers, 144K engagements "Introduction to fractions Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/arithmetic-home/arith-review-fractions/fractions-intro/v/introduction-to-fractions" [YouTube Link](https://youtube.com/watch?v=kZzoVCmUyKg) 2013-08-02T16:30Z 9.3M followers, 531.5K engagements "Understanding economic growth AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/economic-growth/v/understanding-economic-growth-ap-macroeconomics-khan-academy In this video learn about the definition of economic growth and how growth occurs. AP(R) Macroeconomics on Khan Academy: Macroeconomics is all about how an entire nations performance is determined and improved over time. Learn how factors like" [YouTube Link](https://youtube.com/watch?v=khDAji7dXw0) 2018-04-13T16:53Z 9.3M followers, 233K engagements "What is a function Functions and their graphs Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:evaluating-functions/v/what-is-a-function Watch the next lesson: https://www.khanacademy.org/math/algebra2/functions_and_graphs/function-introduction/v/difference-between-equations-and-functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=kvGsIo1TmsM) 2013-06-06T15:09Z 9.3M followers, 3.5M engagements "Practice finding patterns in numbers 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/arithmetic-patterns-and-problem-solving/imp-patterns-in-arithmetic/v/practice-finding-patterns-in-numbers Learn how to spot a pattern in a sequence of numbers such as [--] [--] [--] [--]. Practice this lesson yourself on KhanAcademy.org right now:" [YouTube Link](https://youtube.com/watch?v=l-6uEtTBH7g) 2015-09-18T20:30Z 9.3M followers, 470.1K engagements "Analyzing tone through word choice Reading Khan Academy Tone communicates how an author feels about their topic. How do good readers pick up on tone from clues left by the words an author chooses Lets discuss and find out together Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they" [YouTube Link](https://youtube.com/watch?v=l3yWmXbC36s) 2020-07-06T18:16Z 9.3M followers, 372.4K engagements "Real GDP and nominal GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/real-vs-nominal-gdp/v/real-gdp-and-nominal-gdp Using real GDP as a measure of actual productivity growth Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/gdp-topic/real-nominal-gdp-tutorial/v/gdp-deflatorutm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics" [YouTube Link](https://youtube.com/watch?v=lBDT2w5Wl84) 2012-02-10T19:20Z 9.3M followers, 925.7K engagements "Water as a solvent Water acids and bases Biology Khan Academy Water as a solvent. Polar solutes. Hydrophilic and hydrophobic substances. Watch the next lesson: https://www.khanacademy.org/science/biology/water-acids-and-bases/cohesion-and-adhesion/v/capillary-action-and-why-we-see-a-meniscusutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/water-acids-and-bases/hydrogen-bonding-in-water/v/hydrogen-bonding-in-waterutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From atoms to" [YouTube Link](https://youtube.com/watch?v=lCvBp73ZJ-A) 2015-07-01T19:21Z 9.3M followers, 221.8K engagements "Displacement from time and velocity example One-dimensional motion Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/displacement-from-time-and-velocity-example Worked example of calculating displacement from time and velocity. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=lQ-dvt3V4yQ) 2011-06-11T21:48Z 9.3M followers, 1.2M engagements "Arteries vs. veins-what's the difference Circulatory system physiology NCLEX-RN Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/v/arteries-vs-veins-what-s-the-difference Learn some important differences between arteries (high pressure/low volume) and veins (low pressure/high volume). Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=lXkfZYlnwl4) 2017-12-29T17:58Z 9.3M followers, 328.3K engagements "Basic fractional exponents Exponent expressions and equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:exp/x2ec2f6f830c9fb89:rational-exp/v/basic-fractional-exponents Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/exponent-equations/fractional-exponents-tut/e/exponents_4utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=lZfXc4nHooo) 2013-08-02T21:18Z 9.3M followers, 1.1M engagements "Protons neutrons and electrons in atoms Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:atomic-structure/v/protons-neutrons-and-electrons-in-atoms Want to explore more Check out the full Atoms isotopes and ions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HBSf5CVmr7BQ-DAayIsE71N&si=-2Ff6EXmM07XFU34 Atoms are made up of three types of subatomic particles: protons neutrons and electrons. Protons" [YouTube Link](https://youtube.com/watch?v=lz_gMkQr7YE) 2023-12-13T22:25Z 9.3M followers, 74K engagements "Put-call parity Finance & Capital Markets Khan Academy Put-Call Parity. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/put-call-options/v/long-straddleutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/put-call-options/v/put-as-insuranceutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: Options allow" [YouTube Link](https://youtube.com/watch?v=m4mrd7sHCPM) 2011-03-16T17:29Z 9.3M followers, 415.4K engagements "Nominal interest real interest and inflation calculations AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/nominal-v-real-interest-rates-ap/v/nominal-interest-real-interest-and-inflation-calculations-ap-macroeconomics-khan-academy2 The market for loanable funds brings savers and borrowers together. We can also represent the same idea using a mathematical model. In this video learn about the savings and investment identity. AP(R)" [YouTube Link](https://youtube.com/watch?v=mFI58RRCDbs) 2018-04-11T21:33Z 9.3M followers, 248.1K engagements "Electron Transport Chain Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/in-in-class-11-biology-india/x9d1157914247c627:respiration-in-plants/x9d1157914247c627:electron-transport-system-and-oxidative-phosphorylation/v/electron-transport-chain Overview of the Electron Transport Chain More free lessons at: http://www.khanacademy.org/videov=mfgCcFXUZRk About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have" [YouTube Link](https://youtube.com/watch?v=mfgCcFXUZRk) 2009-12-11T22:20Z 9.3M followers, 2.7M engagements "Limits from graphs Limits and continuity AP Calculus AB Khan Academy Worked examples of estimating limits of a function from its graph. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-limits-continuity/ab-limits-numerically/v/approximating-limit-from-tableutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson https://www.khanacademy.org/math/ap-calculus-ab/ab-limits-continuity/ab-limits-graphically/v/approximating-limit-graphically-and-numericallyutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB AP Calculus AB on Khan Academy: Bill" [YouTube Link](https://youtube.com/watch?v=mols6pMKrto) 2017-09-27T17:41Z 9.3M followers, 172K engagements "Irregular plural nouns words that end in -en Grammar Khan Academy The plural of "whale" is "whales" but what's the plural of "child" David Khan Academy's resident grammarian explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-nouns/e/irregular-plural-nouns---enutm_source=YT&utm_medium=Desc&utm_campaign=grammar Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-nouns/v/irregular-plurals-the-base-pluralutm_source=YT&utm_medium=Desc&utm_campaign=grammar Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=n9poHOKkF28) 2016-01-27T23:30Z 9.3M followers, 524.6K engagements "Optimal point on budget line Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/utility-maximization-with-indifference-curves/v/types-of-indifference-curves Using indifference curves to think about the point on the budget line that maximizes total utility Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=nhSSu0Nzs30) 2012-01-17T19:31Z 9.3M followers, 448.6K engagements "Consumption function basics Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/macroeconomics-the-consumption-function/v/consumption-function-basics The basic idea of a consumption function Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/consumption-function/v/generalized-linear-consumption-functionutm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics" [YouTube Link](https://youtube.com/watch?v=o5iot_ZsoV0) 2012-04-03T21:57Z 9.3M followers, 587.2K engagements "Translation (mRNA to protein) Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/translation/v/translation-mrna-to-protein A deep dive into how mRNA is translated into proteins with the help of ribosomes and tRNA. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/v/differences-in-translation-between-prokaryotes-and-eukaryotesutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson" [YouTube Link](https://youtube.com/watch?v=ocAAkB32Hqs) 2016-06-07T18:29Z 9.3M followers, 1.4M engagements "Introduction to pH Biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/high-school-biology/hs-biology-foundations/hs-ph-acids-and-bases/v/introduction-to-ph Want to explore more Check out the full Solutions acids and bases playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAHzfFIPU3q0hDdHKTEPrz5&si=ODwD0LbDD3IH8KdB The pH scale is used to determine the acidity or basicity (alkalinity) of a substance. Acidic substances have pH values below [--] while basic substances have pH values above 7;" [YouTube Link](https://youtube.com/watch?v=oda2K4IFBaE) 2017-11-29T20:42Z 9.3M followers, 118.1K engagements "Functions of money Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/monetary-system-topic/macro-definition-measurement-and-functions-of-money/v/functions-of-money What does money actually do Economists usually subdivide its functions into three categories: A medium of exchange a store of value and a unit of value. Created by Grant Sanderson. View more lessons or practice this subject at" [YouTube Link](https://youtube.com/watch?v=ok2vtKnSZzY) 2016-06-20T23:43Z 9.3M followers, 162K engagements "Mortgage-backed securities I Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/credit-crisis/v/mortgage-backed-securities-i Part I of the introduction to mortgage-backed securities. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/mort-backed-secs-tut/v/mortgage-backed-securities-iiutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets" [YouTube Link](https://youtube.com/watch?v=oosYQHq2hwE) 2007-08-31T00:47Z 9.3M followers, 714.6K engagements "Proof of fundamental theorem of calculus AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-integration-optional/v/proof-of-fundamental-theorem-of-calculus The first part of the fundamental theorem of calculus tells us that if we define _(_) to be the definite integral of function from some constant _ to _ then _ is an antiderivative of . In other words _'(_)=(_). See why this is so. Created by Sal Khan. Watch the next lesson:" [YouTube Link](https://youtube.com/watch?v=pWtt0AvU0KA) 2013-02-08T18:44Z 9.3M followers, 392.1K engagements "Introduction to the Black-Scholes formula Finance & Capital Markets Khan Academy Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/implied-volatilityutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan" [YouTube Link](https://youtube.com/watch?v=pr-u4LCFYEY) 2013-07-29T18:43Z 9.3M followers, 1.1M engagements Limited data mode. Full metrics available with subscription: lunarcrush.com/pricing
@khanacademy Khan Academy
Khan Academy posts on YouTube about education, saving, finance, math the most. They currently have [---------] followers and [---] posts still getting attention that total [------] engagements in the last [--] hours.
Engagements: [------] #
- [--] Week [-------] +2.40%
- [--] Month [---------] -10%
- [--] Months [----------] +16%
- [--] Year [----------] +46%
Mentions: [---] #
- [--] Week [---] +20%
- [--] Month [-----] +26%
- [--] Months [-----] +15%
- [--] Year [-----] +100%
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- [--] Week [---------] +0.11%
- [--] Month [---------] +0.43%
- [--] Months [---------] +2.80%
- [--] Year [---------] +5.50%
CreatorRank: [-------] #
Social Influence
Social category influence finance 26.49% technology brands 1.77% countries 1.15% social networks 1.04% stocks 0.73% automotive brands 0.31% travel destinations 0.21% celebrities 0.1% premier league 0.1% champions league 0.1%
Social topic influence education #1488, saving #550, finance #1490, math #1033, science #3622, capital markets #28, check out #2158, history 5.94%, derivatives #43, how to 3.75%
Top accounts mentioned or mentioned by @khanacademykids @khanacademylabs @24x7mathtutor @intuit @khanacademymedicine @khanacademyurdu2020 @khanacademyorg @palgeducationacademy @khanacademycomputing9067 @unqcoder @n0245981024214 @n007557054698 @n0614487377758 @computerz777 @3ddesignpro @drteethacademy @ishansharma7390 @skkidssongs @alilearninghubb @spillingtheteaonarthistory
Top assets mentioned Intuit Inc. (INTU) Exponent Inc (EXPO)
Top Social Posts
Top posts by engagements in the last [--] hours
"Impact on median and mean when removing lowest value example 6th grade Khan Academy Sal thinks through the effects of removing a low outlier from a data set. What will happen to the mean and median Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-mean-median-challenge/e/effects-of-shifting-adding-removing-data-pointutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:"
YouTube Link 2015-08-04T18:30Z 9.3M followers, 210.4K engagements
"Ratios and double number lines Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/visualize-ratios/v/ratios-and-double-number-lines Ratios and double number lines education online learning learning lessons education online learning learning lessons"
YouTube Link 2017-11-08T18:33Z 9.3M followers, 187.9K engagements
"Shorting stock Stocks and bonds Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/stock-and-bonds/shorting-stock/v/shorting-stock What does it mean to short a stock Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/stock-and-bonds/shorting-stock/v/shorting-stock-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here:"
YouTube Link 2009-03-03T15:53Z 9.3M followers, 620.6K engagements
"Producer surplus Consumer and producer surplus Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/26/v/producer-surplus Looking at the supply curve as an opportunity cost curve. Understanding the producer surplus as the area between the supply curve and the market price Watch the next lesson:"
YouTube Link 2012-01-09T18:34Z 9.3M followers, 524K engagements
"Proving a sequence converges using the formal definition Series AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-series-new/bc-series-optional/v/proving-a-sequence-converges Applying the formal definition of the limit of a sequence to prove that a sequence converges. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2013-02-15T22:19Z 9.3M followers, 498.8K engagements
"Generating equivalent fractions Fractions 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/equivalent-fractions-and-comparing-fractions/imp-equivalent-fractions/v/generating-equivalent-fractions Create equivalent fractions by dividing a fraction model and number line into smaller parts. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-10-07T23:25Z 9.3M followers, 327.8K engagements
"Increasing opportunity cost Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/production-possibilities-curve-scarcity-choice-and-opportunity-cost-macro/v/increasing-opportunity-cost Why the opportunity cost may increase as you pursue more rabbits Watch the next lesson:"
YouTube Link 2011-12-29T20:44Z 9.3M followers, 576.4K engagements
"Economic profit vs accounting profit Microeconomics Khan Academy Difference between a firm's accounting and economic profit Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/firm-economic-profit/economic-profit-tutorial/v/depreciation-and-opportunity-cost-of-capitalutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/marginal-utility-tutorial/v/types-of-indifference-curvesutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics"
YouTube Link 2012-01-19T00:24Z 9.3M followers, 545K engagements
"Chain rule Derivative rules AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-2-new/ab-3-1a/v/chain-rule-introduction The chain rule states that the derivative of f(g(x)) is f'(g(x))g'(x). In other words it helps us differentiate composite functions. For example sin(x) is a composite function because it can be constructed as f(g(x)) for f(x)=sin(x) and g(x)=x_. Using the chain rule and the derivatives of sin(x) and x_ we can then find the derivative of"
YouTube Link 2018-05-30T19:29Z 9.3M followers, 633.1K engagements
"Ways to represent data Data and statistics 6th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/dot-plot/v/ways-to-represent-data Here are a few of the many ways to look at data. Which is your favorite Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/dot-plot/e/intro-to-simple-datautm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:"
YouTube Link 2015-05-27T01:21Z 9.3M followers, 682.8K engagements
"Viruses Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/biology-of-viruses/virus-biology/v/viruses Introduction to viruses More free lessons at: http://www.khanacademy.org/videov=0h5Jd7sgQWY"
YouTube Link 2009-10-04T05:18Z 9.3M followers, 1.2M engagements
"Congruent and Similar Triangles u07_l1_t3_we2 Congruent and Similar Triangles Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education"
YouTube Link 2011-11-09T20:24Z 9.3M followers, 182.5K engagements
"Synthetic division Polynomial and rational functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra-home/alg-polynomials/alg-synthetic-division-of-polynomials/v/synthetic-division Basic algorithm for Synthetic Division Watch the next lesson: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/synthetic-division/v/synthetic-division-example-2utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson"
YouTube Link 2012-08-01T16:17Z 9.3M followers, 1.4M engagements
"Introduction to work and energy Work and energy Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/introduction-to-work-and-energy Introduction to work and energy. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/work-and-energy-part-2utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson"
YouTube Link 2008-02-17T19:46Z 9.3M followers, 2M engagements
"Concrete and abstract nouns The parts of speech Grammar Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/types-of-nouns/v/concrete-and-abstract-nouns The difference between concrete and abstract nouns can be a little fuzzy. Let's start by focusing on the word origins of "concrete" and "abstract" and see if that gives us a way in. Practice this yourself on Khan Academy right now:"
YouTube Link 2016-02-04T00:58Z 9.3M followers, 819.3K engagements
"Pixar in a Box Welcome to Pixar in a Box Khan Academy Watch the next lesson: https://www.khanacademy.org/partner-content/pixar/effects/particle/v/effects-overviewutm_source=YT&utm_medium=Desc&utm_campaign=computeranimation Computer Animation on Khan Academy: A collaboration between Pixar Animation Studios and Khan Academy. Sponsored by Disney. Questions/Feedback: piab@khanacademy.org About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle"
YouTube Link 2015-08-27T17:34Z 9.3M followers, 1.5M engagements
"Trade and tariffs AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/29-international-trade-and-public-policy/v/tariff-and-imports-worked-example When governments impose restrictions on international trade this affects the domestic price of the good and reduces total surplus. One such imposition is a tariff (a tax on imported or exported goods and services). See how a tariff impacts price consumer surplus producer surplus tax revenue and deadweight"
YouTube Link 2018-12-07T20:14Z 9.3M followers, 271.5K engagements
"Random variables Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/random-variables-discrete/v/random-variables Basic idea and definitions of random variables Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/e/constructing-probability-distributionsutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Watch the"
YouTube Link 2012-12-06T17:33Z 9.3M followers, 2.2M engagements
"The pre-equilibrium approximation Kinetics AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:kinetics/x2eef969c74e0d802:reaction-mechanisms/e/reaction-mechanisms-ap The pre-equilibrium approximation is used to find the rate law for a reaction with a fast and reversible initial step. In this method we first write the rate law based on the slow (rate-determining) step. Then to eliminate any intermediates from the rate law we use the fast initial step to solve for the"
YouTube Link 2021-01-30T18:29Z 9.3M followers, 23.5K engagements
"Subject-verb agreement Syntax Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/humanities/grammar/syntax-conventions-of-standard-english/subject-verb-agreement-and-pronoun-antecedent-agreement/e/subject-verb-agreement Agreement is the art of making sure that sentence parts agree with one another; you want to make sure that your subjects and verbs match up. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/subject-verb-agreement Watch the next lesson:"
YouTube Link 2016-08-23T20:24Z 9.3M followers, 758.1K engagements
"Introduction to production functions AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/the-production-function/v/total-product-marginal-product-and-average-product Production functions describe how output is determined by various inputs. The short run is defined as the period of time in which at least one input is fixed. Anything longer than that is considered the long run. AP(R) Microeconomics on Khan Academy:"
YouTube Link 2018-11-20T21:41Z 9.3M followers, 337.4K engagements
"Directional derivatives and slope Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/gradient-and-directional-derivatives/v/directional-derivatives-and-slope The directional derivative can be used to compute the slope of a slice of a graph but you must be careful to use a unit vector. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the"
YouTube Link 2016-05-12T00:12Z 9.3M followers, 212.9K engagements
"Proof: harmonic series diverges Series AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-series-new/bc-10-6/v/harmonic-series-divergent Showing that the harmonic series [--] + _ + _ + _ + . actually diverges using the direct comparison test. This proof is famous for its clever use of algebraic manipulation AP Calculus BC on Khan Academy: Learn AP Calculus BC - everything from AP Calculus AB plus a few extra goodies such as Taylor series to prepare you for the AP Test About Khan"
YouTube Link 2014-08-21T16:43Z 9.3M followers, 217.1K engagements
"Vector fields introduction Multivariable calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/thinking-about-multivariable-function/visualizing-vector-valued-functions/v/vector-fields-introduction Vector fields let you visualize a function with a two-dimensional input and a two-dimensional output. You end up with well a field of vectors sitting at various points in two-dimensional space. About Khan Academy: Khan Academy offers practice exercises instructional videos and a"
YouTube Link 2016-05-05T22:37Z 9.3M followers, 476.6K engagements
"Introduction to the cell Cells High school biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/cell-structures-and-their-functions/v/introduction-to-the-cell Introduction to the cell. View more lessons or practice this subject at https://www.khanacademy.org/science/high-school-biology/hs-cells/hs-basic-cell-structures/v/introduction-to-the-cellutm_source=youtube&utm_medium=desc&utm_campaign=highschoolbiology Khan Academy is a nonprofit organization with the"
YouTube Link 2017-11-30T00:20Z 9.3M followers, 317.3K engagements
"DNA cloning and recombinant DNA Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/biotechnology/v/dna-cloning-and-recombinant-dna Introduction to DNA cloning. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna-technology/v/hybridization-microarrayutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson"
YouTube Link 2016-06-02T18:37Z 9.3M followers, 1.2M engagements
"Nuclear fission Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:nuclear-physics/x6679aa2c65c01e53:nuclear-fission/v/nuclear-fission Want to explore more Check out the full nuclear physics playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCBNsg2hoAn0ZpFrmNbX4XO During a nuclear fission reaction a fissile nucleus absorbs a neutron and splits into two smaller nuclei. One or more free neutrons are also released. If enough fissile nuclei are located"
YouTube Link 2024-02-23T15:28Z 9.3M followers, 115.7K engagements
"Shell method for rotating around vertical line AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/old-ap-calculus-ab/ab-applications-definite-integrals/ab-shell-method/v/shell-method-for-rotating-around-vertical-line Introducing the shell method for rotation around a vertical line. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-01-09T16:20Z 9.3M followers, 661.2K engagements
"Exponential growth functions Exponential and logarithmic functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:exponential-growth-decay/x2f8bb11595b61c86:exponential-vs-linear-growth/v/exponential-growth-functions Exponential Growth Functions Watch the next lesson: https://www.khanacademy.org/math/algebra2/exponential_and_logarithmic_func/exp_growth_decay/v/graphing-exponential-functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson"
YouTube Link 2010-04-08T22:26Z 9.3M followers, 1.7M engagements
"Mean value theorem Existence theorems AP Calculus AB Khan Academy The Mean Value Theorem states that if a function f is continuous on the closed interval ab and differentiable on the open interval (ab) then there exists a point c in the interval (ab) such that f'(c) is equal to the function's average rate of change over ab. In other words the graph has a tangent somewhere in (ab) that is parallel to the secant line over ab. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2014-01-13T17:28Z 9.3M followers, 829.5K engagements
"The pH scale Acids and bases AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:acids-and-bases/x2eef969c74e0d802:introduction-to-acids-and-bases/v/worked-examples-calculating-hydronium-ion-concentration-and-ph The pH scale is a convenient way to represent the acidity or basicity of a solution. We can calculate the pH of a solution by taking the negative logarithm of the hydronium ion concentration or pH = -logHO. At 25C a solution with a pH less than [--] is acidic a solution"
YouTube Link 2021-07-31T00:49Z 9.3M followers, 28.2K engagements
"pH and pKa relationship for buffers Chemistry Khan Academy How the Henderson-Hasselbalch equation can be used to look at the ratio of conjugate acid and base using relationship between buffer pH and pKa. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffer-capacityutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffer-solution-calculationsutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan"
YouTube Link 2016-03-15T03:24Z 9.3M followers, 410.8K engagements
"Solving a consecutive integer problem algebraically Linear equations Algebra I Khan Academy The sum of [--] consecutive odd integers is [---]. What are the [--] integers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/e/integer_sumsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:"
YouTube Link 2013-12-05T20:09Z 9.3M followers, 780K engagements
"Saddle points Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/applications-of-multivariable-derivatives/optimizing-multivariable-functions-videos/v/saddle-points Just because the tangent plane to a multivariable function is flat it doesn't mean that point is a local minimum or a local maximum. There is a third possibility new to multivariable calculus called a "saddle point""
YouTube Link 2016-06-22T23:02Z 9.3M followers, 233.3K engagements
"Slope of a line secant to a curve Taking derivatives Differential Calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/differential-calculus/dc-diff-intro/dc-secant-lines/v/slope-of-a-line-secant-to-a-curve Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/secant-line-slope-tangent/e/slope-of-secant-linesutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Watch the next lesson:"
YouTube Link 2013-08-02T18:50Z 9.3M followers, 477.4K engagements
"Direct and inverse variation Rational expressions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra-home/alg-rational-expr-eq-func/alg-direct-and-inverse-variation/v/direct-and-inverse-variation Understanding direct and inverse variation Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/rational-expressions/direct_inverse_variation/e/direct_and_inverse_variationutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:"
YouTube Link 2011-04-14T00:25Z 9.3M followers, 1.4M engagements
"Value added approach to calculating GDP AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/value-added-approach-to-calculating-gdp-macroeconomics-khan-academy In this video we learn how a nation's GDP can be calculated by summing up the value added by all the intermediate producers in a nation. View more lessons or practice this subject at"
YouTube Link 2017-11-21T08:33Z 9.3M followers, 147.2K engagements
"Vietnam War The 20th century World history Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/postwarera/1960s-america/v/vietnam-war Sal gives an overview of the Vietnam War. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/cold-war/v/allende-and-pinochet-in-chileutm_source=YT&utm_medium=Desc&utm_campaign=worldhistory Missed the previous lesson"
YouTube Link 2011-04-27T18:32Z 9.3M followers, 705.7K engagements
"Radian and degree Unit circle definition of trig functions Trigonometry Khan Academy What a radian is. Converting radians to degrees and vice versa. Watch the next lesson: https://www.khanacademy.org/math/trigonometry/unit-circle-trig-func/Trig-unit-circle/v/unit-circle-definition-of-trig-functions-1utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Missed the previous lesson https://www.khanacademy.org/math/trigonometry/unit-circle-trig-func/radians_tutorial/v/radian-and-degree-conversion-practiceutm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Trigonometry on Khan Academy: Big"
YouTube Link 2007-08-14T02:37Z 9.3M followers, 893.7K engagements
"The Pythagorean theorem intro Right triangles and trigonometry Geometry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-pythagorean-theorem/v/the-pythagorean-theorem Introduction to the Pythagorean Theorem Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/right_triangles_topic/pyth_theor/e/pythagorean_theorem_1utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson:"
YouTube Link 2010-08-09T17:21Z 9.3M followers, 3M engagements
"Partial derivatives introduction Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/partial-derivatives/v/partial-derivatives-introduction Partial derivatives tell you how a multivariable function changes as you tweak just one of the variables in its input. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math"
YouTube Link 2016-05-12T00:12Z 9.3M followers, 1.3M engagements
"Introduction to inflation Inflation - measuring the cost of living Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/price-indices-and-inflation/v/introduction-to-inflation Basics of price inflation and the CPI (consumer price index) Watch the next lesson:"
YouTube Link 2012-02-14T18:05Z 9.3M followers, 672.7K engagements
"DNA Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/dna-and-rna-structure/v/dna-deoxyribonucleic-acid Learn about DNA (deoxyribonucleic acid). Overview of DNA bases complementary base pairing and the structure of the double helix. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/v/molecular-structure-of-dnautm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson"
YouTube Link 2014-12-10T17:36Z 9.3M followers, 606.3K engagements
"Molecular complete ionic and net ionic equations AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:net-ionic-equations/a/complete-ionic-and-net-ionic-equations In the molecular equation for a reaction all of the reactants and products are represented as neutral molecules (even soluble ionic compounds and strong acids). In the complete ionic equation soluble ionic compounds and strong acids are rewritten as dissociated"
YouTube Link 2017-05-04T20:05Z 9.3M followers, 341.6K engagements
"Marginal distribution and conditional distribution AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/analyzing-categorical-ap/distributions-two-way-tables/v/marginal-distribution-and-conditional-distribution Marginal distribution and conditional distribution. View more lessons or practice this subject at"
YouTube Link 2016-11-16T19:34Z 9.3M followers, 429.8K engagements
"Concentration gradients Membranes and transport Biology Khan Academy Example showing how two different types of particles can move down their concentration gradients in opposite directions. Watch the next lesson: https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/osmosisutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/diffusion-videoutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From"
YouTube Link 2015-07-30T18:24Z 9.3M followers, 264.6K engagements
"Using context clues to figure out new words Reading Khan Academy When you're reading it can be frustrating to encounter words you don't know Try out these strategies and use the word's context to figure out the word's meaning. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can"
YouTube Link 2020-03-27T15:07Z 9.3M followers, 759.5K engagements
"Introduction to experiment design Study design AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/gathering-data-ap/statistics-experiments/a/principles-of-experiment-design Introduction to experiment design. Explanatory and response variables. Control and treatment groups. View more lessons or practice this subject at"
YouTube Link 2016-11-11T22:29Z 9.3M followers, 394.6K engagements
"Banking [--] Money banking and central banks Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/banking-and-money/v/banking-1 Introduction to how banks make money and the value they (potentially) add to society. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2008-10-07T19:53Z 9.3M followers, 1.1M engagements
"ANOVA 1: Calculating SST (total sum of squares) Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/analysis-of-variance-anova-library/analysis-of-variance-anova/v/anova-1-calculating-sst-total-sum-of-squares Analysis of Variance [--] - Calculating SST (Total Sum of Squares) Watch the next lesson:"
YouTube Link 2010-11-12T18:46Z 9.3M followers, 1.1M engagements
"Supply and demand curves in foreign exchange AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-foreign-exchange-market/v/supply-and-demand-curves-in-foreign-exchange-ap-macroeconomics-khan-academy In this video learn about how the model of the foreign exchange market is used to represent the determination of exchange rates. AP(R) Macroeconomics on Khan Academy: Macroeconomics is all about how an"
YouTube Link 2018-04-24T01:03Z 9.3M followers, 103.2K engagements
"Newton Leibniz and Usain Bolt Derivatives introduction AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-2-1/v/newton-leibniz-and-usain-bolt Why we study differential calculus. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-intro/ab-derivative-intuition/v/derivative-as-a-conceptutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson"
YouTube Link 2012-02-16T21:27Z 9.3M followers, 2M engagements
"Zeros of polynomials introduction Polynomial graphs Algebra [--] Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-graphs/x2ec2f6f830c9fb89:poly-zeros/v/plot-polynomial-zeros The zeros of a polynomial p(x) are all the x-values that make the polynomial equal to zero. They are interesting to us for many reasons one of which is that they tell us about the x-intercepts of the polynomial's graph. We will also see that they are directly related to the factors of the polynomial. View more lessons or"
YouTube Link 2019-07-15T16:27Z 9.3M followers, 62.3K engagements
"Polynomial identities introduction Algebra [--] Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-factor/x2ec2f6f830c9fb89:poly-identities/v/analyzing-polynomial-manipulations Polynomial identities are equations that are true for all possible values of the variable. For example x+2x+1=(x+1) is an identity. This introduction video gives more examples of identities and discusses how we prove an equation is an identity. View more lessons or practice this subject at"
YouTube Link 2019-05-06T23:47Z 9.3M followers, 62.9K engagements
"Newton's second law Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:motion-and-forces/x6679aa2c65c01e53:newtons-first-and-second-laws/v/newtons_second_law Want to explore more Check out the full motion forces & momentum playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCiFE95STYVxTZ6Ep402vfa Newton's second law states than an object's acceleration is equal to the net force acting on the object divided by its mass. Newton's first law is a special"
YouTube Link 2024-07-03T15:57Z 9.3M followers, 30.3K engagements
"Introduction to price elasticity of demand AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/23/v/determinants-of-price-elasticity-of-demand-ap-microeconomics-khan-academy Economists use the concept of price elasticity of demand to describe how the quantity demanded changes in response to a price change. In this video explore a simple way to calculate the price elasticity of demand how to interpret that calculation and how price elasticity of"
YouTube Link 2018-11-15T19:21Z 9.3M followers, 909.9K engagements
"Introduction to circuits and Ohm's law Circuits Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-1 Introduction to electricity circuits current and resistance. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-2utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson"
YouTube Link 2018-01-05T22:00Z 9.3M followers, 836.5K engagements
"Ionic bonds AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:molecular-and-ionic-compound-structure-and-properties/x2eef969c74e0d802:types-of-chemical-bonds/v/ionic-bonds Want to explore more Check out the full Chemical bonding playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAYCvTHhMGsNvLS-btVPXRw&si=vZ4FA1B53s-e3sq9 Ionic bonds result from the electrostatic attraction between oppositely charged ions which form when valence electrons are"
YouTube Link 2019-10-30T20:13Z 9.3M followers, 145.4K engagements
"GCF to Factor a Polynomial u12 l1 t1 we2 GCF to Factor a Polynomial u12 l1 t1 we2 GCF to Factor Polynomial u12 l1 t1 we2 GCF to Factor Polynomial"
YouTube Link 2011-11-21T21:13Z 9.3M followers, 279.1K engagements
"Limit examples (part 1) Limits Differential Calculus Khan Academy Some limit exercises Practice this yourself on Khan Academy right now: https://www.khanacademy.org/e/limits-basics-challengeutm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/limits_topic/old-limits-tutorial/v/limit-examples-part-2utm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson"
YouTube Link 2007-09-30T18:33Z 9.3M followers, 1.7M engagements
"Specific heat capacity Khan Academy Want to explore more Check out the full thermodynamics playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HAVatEXAN_W1Lrcuu7yy7_6 If the same amount of heat flows into (or out of) equal masses of different substances their temperatures may not change by the same amount. Specific heat capacity (c) tells us how much heat energy is required to change one unit mass of a substance by one unit of temperature. Specific heat is related to heat (q) the mass of the sample (m) and the change in temperature (T) by the equation q=cmT. Sections: 00:00 -"
YouTube Link 2024-07-26T19:34Z 9.3M followers, 47.7K engagements
"Introduction to Evolution and Natural Selection Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/natural-selection/natural-selection-ap/v/introduction-to-evolution-and-natural-selection Introduction to evolution variation in a population and natural selection More free lessons at: http://www.khanacademy.org/videov=GcjgWov7mTM About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited"
YouTube Link 2009-09-21T18:01Z 9.3M followers, 2.5M engagements
"Angle basics Angles and intersecting lines Geometry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-angles/v/angle-basics The naming of an angle is related to the line segments that create it. We'll also learn about the angle's vertex. Come on. Let's do this. Watch the next lesson: https://www.khanacademy.org/math/geometry/parallel-and-perpendicular-lines/Angle_basics/v/measuring-angles-in-degreesutm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the"
YouTube Link 2011-09-21T14:34Z 9.3M followers, 1.4M engagements
"Overview of the Middle Ages World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/medieval-times/european-middle-ages-and-serfdom/v/overview-of-the-middle-ages The European Middle Ages (or Medieval Time) is roughly [----] year span of time from the end of the Roman Empire (in the West) to the beginning of the Renaissance. This video gives as overview with maps and touches on the key events like the Great Schism Crusades and Black Death. Practice this yourself on Khan Academy"
YouTube Link 2017-05-08T13:01Z 9.3M followers, 552.2K engagements
"Statistics: Standard deviation Descriptive statistics Probability and Statistics Khan Academy Review of what we've learned. Introduction to the standard deviation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/exploring_standard_deviation_1utm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Watch the next lesson:"
YouTube Link 2009-01-25T19:17Z 9.3M followers, 2.3M engagements
"Relationship between bond prices and interest rates Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/financial-assets-ap/v/relationship-between-bond-prices-and-interest-rates Why bond prices move inversely to changes in interest rate. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2013-09-29T04:26Z 9.3M followers, 1.9M engagements
"Elements and atoms Atoms compounds and ions Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/chemistry-of-life/elements-of-life/v/elements-and-atoms How elements relate to atoms. The basics of how protons electrons and neutrons make up an atom. Watch the next lesson: https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-the-atom/v/atomic-number-mass-number-and-isotopesutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan"
YouTube Link 2011-08-01T02:06Z 9.3M followers, 4.3M engagements
"Example punnet square for sex-linked recessive trait High school biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-sex-linkage/v/example-punnet-square-for-sex-linked-recessive-trait Example punnet square for sex-linked recessive trait. View more lessons or practice this subject at"
YouTube Link 2018-05-03T19:06Z 9.3M followers, 199.7K engagements
"GPT-4o (Omni) math tutoring demo on Khan Academy New GPT-4o (Omni) tutoring demo: My new book BRAVE NEW WORDS: HOW AI WILL REVOLUTIONIZE EDUCATION comes out tomorrow. What is described in this book is happening fast. My son and I filmed this last week at OpenAI that gives a glimpse of this happening on Khan Academy's iPad app (we haven't released this level of tutoring yet but it will come.) :) Based on the comments worth adding that Imran knows this content :) He's just demoing what might happen if someone struggles with it :) online learning online class video class video tutorial online"
YouTube Link 2024-05-13T20:21Z 9.3M followers, 353.5K engagements
"Newton's third law Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:force-pairs-and-momentum/x6679aa2c65c01e53:newtons-third-law/v/newtons_third_law Want to explore more Check out the full motion forces & momentum playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HCiFE95STYVxTZ6Ep402vfa Newton's third law states that forces always exist in equal and opposite pairs. One object cannot exert a force on another without experiencing an equal magnitude"
YouTube Link 2024-07-05T16:08Z 9.3M followers, 29.9K engagements
"You Can Learn Anything Khan Academy is on a mission to unlock the world's potential. Most people think their intelligence is fixed. The science says its not. It starts with knowing you can learn anything. Join the movement at http://khanacademy.org/youcanlearnanything. About Khan Academy Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software deep data analytics and intuitive user interfaces to"
YouTube Link 2014-08-19T16:42Z 9.3M followers, 8.6M engagements
"Fundamental theorem of calculus (Part 2) AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-7/v/connecting-the-first-and-second-fundamental-theorems-of-calculus There are really two versions of the fundamental theorem of calculus and we go through the connection here. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-02-09T00:23Z 9.3M followers, 408.2K engagements
"Carbon as a building block of life Properties of carbon Biology Khan Academy Carbon as a building block of life. Watch the next lesson: https://www.khanacademy.org/science/biology/properties-of-carbon/carbon/v/silicon-based-lifeutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/v/buffer-systemutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From atoms to cells from genes to proteins from populations to ecosystems biology is the study of"
YouTube Link 2015-07-06T16:15Z 9.3M followers, 210.2K engagements
"Origins of agriculture World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/world-history-beginnings/birth-agriculture-neolithic-revolution/v/origins-of-agriculture How why and when did agriculture first emerge and what were its implications on human society Sal explains in an overview. Practice this yourself on Khan Academy right now:"
YouTube Link 2017-01-16T19:10Z 9.3M followers, 341.2K engagements
"P-values and significance tests AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/p-values-and-significance-tests Learn how to compare a P-value to a significance level to make a conclusion in a significance test. View more lessons or practice this subject at"
YouTube Link 2018-01-17T22:21Z 9.3M followers, 987.5K engagements
"Review and intuition why we divide by n-1 for the unbiased sample Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/summarizing-quantitative-data-ap/more-standard-deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance Reviewing the population mean sample mean population variance sample variance and building an intuition for why we divide by n-1 for the unbiased sample variance Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2012-11-21T16:38Z 9.3M followers, 365.4K engagements
"Comparing fractions visually and on number line 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/equivalent-fractions-and-comparing-fractions/imp-comparing-fractions/v/comparing-fractions-visually-and-on-number-line Compare fractions by graphing them a number line and drawing fraction models. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-10-07T23:24Z 9.3M followers, 240.4K engagements
"Introduction to increasing decreasing positive or negative intervals Algebra I Khan Academy Sal discusses there Intervals where function is increasing decreasing postive or negative and their graphical representation. Watch the next lesson: https://www.khanacademy.org/math/algebra/algebra-functions/positive-negative-increasing-decreasing-intervals/v/when-a-function-is-positive-or-negativeutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson"
YouTube Link 2015-06-09T17:06Z 9.3M followers, 678.4K engagements
"Product rule proof Taking derivatives Differential Calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-diff-1-optional/v/product-rule-proof Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/product_rule/v/product-ruleutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson"
YouTube Link 2015-03-05T23:54Z 9.3M followers, 192K engagements
"Healthcare system overview Health care system Heatlh & Medicine Khan Academy The different roles in the healthcare system. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/health-care-system/v/paying-doctorsutm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Missed the previous lesson https://www.khanacademy.org/science/health-and-medicine/health-care-system/v/health-care-costs-in-us-vs-europeutm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart."
YouTube Link 2011-08-30T19:10Z 9.3M followers, 638.9K engagements
"How to approximate square roots Numbers and operations 8th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/approximating-square-roots-2 Learn how to find the approximate values of square roots. The examples used in this video are [--] [--] and [---]. The technique used is to compare the squares of whole numbers to the number we're taking the square root of. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2015-04-29T00:06Z 9.3M followers, 472.1K engagements
"Lac operon Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/regulation-of-gene-expression-and-cell-specialization/v/lac-operon Overview of gene regulation in the Lac operon. Discussion of CAP cAMP lac repressor and allolactose in regulation of lac operon. education online learning learning lessons education online learning learning lessons"
YouTube Link 2016-06-23T17:43Z 9.3M followers, 891.2K engagements
"Welcome to Financial Literacy Financial Literacy Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/college-careers-more/financial-literacy Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can help"
YouTube Link 2024-08-12T18:33Z 9.3M followers, 36.4K engagements
"Graphing a parabola using roots and vertex Quadratic equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/v/graphing-a-parabola-using-roots-and-vertex Multiple examples graphing parabolas using roots and vertices Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-08-06T21:08Z 9.3M followers, 914.2K engagements
"Division [--] Multiplication and division Arithmetic Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/arithmetic-home/multiply-divide/division-intro/v/division-1 Introduction to division Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/delightful_division/e/division_0.5utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Watch the next lesson:"
YouTube Link 2010-01-20T21:08Z 9.3M followers, 1.3M engagements
"Communism The 20th century World history Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/postwarera/postwar-era/v/communism Overview of Communism and Marxist-Leninist states. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/cold-war/v/korean-war-overviewutm_source=YT&utm_medium=Desc&utm_campaign=worldhistory Missed the previous lesson"
YouTube Link 2011-05-06T15:26Z 9.3M followers, 1.1M engagements
"Integration with partial fractions AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-12/v/integration-with-partial-fractions Finding the integral of a rational function using linear partial fraction decomposition. View more lessons or practice this subject at https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-12/v/integration-with-partial-fractionsutm_source=youtube&utm_medium=desc&utm_campaign=apcalculusbc Khan Academy is a"
YouTube Link 2018-06-15T18:33Z 9.3M followers, 137.5K engagements
"Polynomial remainder theorem Polynomial and rational functions Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-div/x2ec2f6f830c9fb89:remainder-theorem/v/polynomial-remainder-theorem Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/polynomial-remainder-theorem-tutorial/e/remainder-theorem-of-polynomialsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:"
YouTube Link 2014-11-25T17:56Z 9.3M followers, 645.2K engagements
"IP addresses and DNS Internet [---] Computer Science Khan Academy The co-founder of the Internet Vint Cerf and software engineer Paola Mejia take us through the ins and outs of how networks talk to each other. Watch the next lesson: https://www.khanacademy.org/computing/computer-science/internet-intro/internet-works-intro/v/the-internet-packet-routers-and-reliabilityutm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson"
YouTube Link 2019-04-23T20:46Z 9.3M followers, 433.4K engagements
"Atomic spectra Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:electromagnetic-radiation/x6679aa2c65c01e53:particle-behaviors-of-em-radiation/v/atomic_spectra Want to explore more Check out the full Atomic models and periodicity playlist here: https://www.youtube.com/playlistlist=PLSQl0a2vh4HD2AZcy7Pe8mHAiO5UG2WKt Electrons only exist at specific discrete energy levels in an atom. If an electron absorbs a photon with energy equal to the difference between two"
YouTube Link 2024-06-20T20:26Z 9.3M followers, 205.9K engagements
"Derivative as a concept Derivatives introduction AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-differentiation-1-new/ab-2-1/v/derivative-as-a-concept Why we study differential calculus. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-intro/ab-derivative-intuition/v/derivative-as-a-conceptutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson"
YouTube Link 2017-07-19T17:12Z 9.3M followers, 1.3M engagements
"The scientific method Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/intro-to-biology/science-of-biology/a/the-science-of-biology The scientific method education online learning learning lessons education online learning learning lessons"
YouTube Link 2016-03-15T18:17Z 9.3M followers, 1.4M engagements
"Operons and gene regulation in bacteria Looking at how regulatory DNA sequences can repress or promote gene transcription (particularly in bacteria operons). education online learning learning lessons education online learning learning lessons"
YouTube Link 2016-06-20T18:47Z 9.3M followers, 385K engagements
"Introduction to solubility equilibria Equilibrium AP Chemistry Khan Academy The solubility product constant K is an equilibrium constant that reflects the extent to which an ionic compound dissolves in water. For compounds that dissolve to produce the same number of ions we can directly compare their K values to determine their relative solubilities. If we know the solubility of a salt we can use this information to calculate the K value for the compound. View more lessons or practice this subject at"
YouTube Link 2021-07-08T18:01Z 9.3M followers, 91.9K engagements
"Adding and subtracting negative numbers Pre-Algebra Khan Academy Learn how to add and subtract negative numbers. The problems solved in this video are [--] - [--] = [---] and [---] - [--] = [---] and [---] + [--] = [--] and [--] - (-3) = [--] and [---] - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/add-subtract-negatives-pre-alg/e/adding_negative_numbersutm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson:"
YouTube Link 2015-08-10T22:23Z 9.3M followers, 2.1M engagements
"Directional derivative Directional derivatives tell you how a multivariable function changes as you move along some vector in its input space. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art adaptive technology that identifies strengths and learning gaps. We've also partnered"
YouTube Link 2016-05-12T00:12Z 9.3M followers, 686K engagements
"Molecular polarity Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:electronegativity-and-bond-polarity/v/molecular-polarity Want to explore more Check out the full States of matter playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAcadC8xfE0VtGhfHdrECNO&si=aLyVfcDx3Xp257S6 Molecular polarity is determined not just by individual polar bonds but by the molecules 3D shape. Even if bonds are polar the overall molecule may"
YouTube Link 2024-09-12T18:04Z 9.3M followers, 40.6K engagements
"Changes in Market Equilibrium Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/market-equilibrium-disequilibrium-and-changes-in-equilibrium/v/changes-in-market-equilibrium How the equilibrium price or quantity might change due to changes in supply or demand More free lessons at: http://www.khanacademy.org/videov=NgPqyM3I_8o"
YouTube Link 2012-01-02T20:39Z 9.3M followers, 722.3K engagements
"Change in supply versus change in quantity supplied AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/supply/v/change-in-supply-versus-change-in-quantity-supplied Change in supply versus change in quantity supplied. View more lessons or practice this subject at"
YouTube Link 2017-11-21T07:45Z 9.3M followers, 127.2K engagements
"Introduction to Grammar Grammar Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/welcome-to-grammar-subject/v/introduction-to-grammar Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language its rules and its conventions. By understanding English by speaking it by writing it by reading this very sentence you are a grammarian yourself Watch the next lesson:"
YouTube Link 2016-03-23T00:12Z 9.3M followers, 2.2M engagements
"Elements and atomic number Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:atomic-structure/v/elements-and-atomic-number Want to explore more Check out the full Atoms isotopes and ions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HBSf5CVmr7BQ-DAayIsE71N&si=n5y_agsm1Gc3CdM- Atoms come in a variety of types called elements each with a unique set of physical and chemical properties. An element is"
YouTube Link 2023-12-13T22:25Z 9.3M followers, 36.6K engagements
"Economic profit for a monopoly Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/imperfect-competition/ap-monopolies-tutorial/v/monopolist-optimizing-price-part-1-total-revenue Learn about how to represent a monopoly market graphically in this video. Topics covered include the profit-maximizing quantity pricing decisions and deadweight loss associated with monopolies. Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such"
YouTube Link 2019-03-15T21:29Z 9.3M followers, 351.5K engagements
"Interest rate swap [--] Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-1 The basic dynamic of an interest rate swap. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous"
YouTube Link 2011-09-16T22:40Z 9.3M followers, 588.1K engagements
"Transformation matrix with respect to a basis Linear Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/linear-algebra/alternate-bases/change-of-basis/v/lin-alg-transformation-matrix-with-respect-to-a-basis Finding the transformation matrix with respect to a non-standard basis Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/alternate_bases/change_of_basis/v/lin-alg-alternate-basis-tranformation-matrix-exampleutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Missed the"
YouTube Link 2009-11-11T21:21Z 9.3M followers, 510.3K engagements
"Hedge funds intro Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/investment-vehicles-tutorial/hedge-funds/v/hedge-funds-intro Overview of how hedge funds are different than mutual funds. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/investment-vehicles-tutorial/hedge-funds/v/hedge-fund-structure-and-feesutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the"
YouTube Link 2011-04-19T00:05Z 9.3M followers, 921K engagements
"Statistics: Sample variance Descriptive statistics Probability and Statistics Khan Academy Using the variance of a sample to estimate the variance of a population Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variablesutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous lesson https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-populationutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Probability and"
YouTube Link 2009-01-23T05:05Z 9.3M followers, 940.7K engagements
"Linear combinations and span Vectors and spaces Linear Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/linear-algebra/vectors-and-spaces/linear-combinations/v/linear-combinations-and-span Understanding linear combinations and spans of vectors Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/linear_independence/v/linear-algebra-introduction-to-linear-independenceutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Missed the previous lesson"
YouTube Link 2009-10-08T23:54Z 9.3M followers, 1.5M engagements
"Income elasticity of demand AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/25/e/cross-and-income-elasticity-of-demand Elasticities can be calculated for more than just price elasticity of supply or price elasticity of demand. For example income elasticity of demand as a measure of how quantity demanded changes in response to income. AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such"
YouTube Link 2018-11-21T00:32Z 9.3M followers, 218K engagements
"Cancer Cells MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/biology/cellular-molecular-biology/stem-cells-and-cancer/v/cancer An introduction to what cancer is and how it is the by-product of broken DNA replication. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-development/v/stem-cellsutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson"
YouTube Link 2009-09-30T01:34Z 9.3M followers, 953.8K engagements
"Components of GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/components-of-gdp Thinking about how different types of expenditures would be accounted for in GDP Watch the next lesson:"
YouTube Link 2012-02-04T23:57Z 9.3M followers, 620.5K engagements
"Dependent & independent variables 6th grade Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-dependent-independent/e/dependent-and-independent-variables Sal introduces independent and dependent variables: how to identify the independent/dependent variable in a given setting and how we write equations with the dependent variable by itself. online learning online class video class video tutorial online education online learning online class video class video tutorial"
YouTube Link 2022-01-14T22:30Z 9.3M followers, 154.8K engagements
"Profit maximization AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/profit-maximization/v/profit-maximization-worked-example Learn about the profit maximization rule and how to implement this rule in a graph of a perfectly competitive firm in this video. AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy such as people households and firms. Learn how"
YouTube Link 2018-12-19T01:51Z 9.3M followers, 327.6K engagements
"Multiplying: [--] digits times [--] digit (with carrying) Arithmetic Khan Academy We use something called the standard method which involves writing the larger of the two numbers on top. Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/multi_digit_multiplication/e/multiplication_2utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Watch the next lesson:"
YouTube Link 2015-08-14T18:59Z 9.3M followers, 815.5K engagements
"Mitosis Cells MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/v/mitosis Mitosis is how cells divide Learn what happens in all the phases of mitosis: prophase metaphase anaphase and telophase. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/comparing-mitosis-and-meiosisutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson"
YouTube Link 2015-05-04T23:05Z 9.3M followers, 1.3M engagements
"Transfer pricing and tax havens Taxes Finance & Capital Markets Khan Academy How a corporation can set up a tax haven and use it through transfer pricing. Created by Sal Khan. Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/taxes-topic/corporate-taxation/v/is-limited-liability-or-double-taxation-fairutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: In exchange for being treated as a person-like-legal entity (and the limited liability this gives for its owners) most"
YouTube Link 2012-10-08T20:31Z 9.3M followers, 417.9K engagements
"Balancing chemical equations Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-reactions/x2613d8165d88df5e:balancing-chemical-equations/v/balancing-chemical-equations-introduction Want to explore more Check out the full Chemical reactions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HCMPYDKDWzckresmNj5geHf&si=5k_qLv5ROTvEOH3R Chemical equations use formulas and symbols to represent chemical reactions. Since matter cannot be created or"
YouTube Link 2014-11-19T19:32Z 9.3M followers, 1.9M engagements
"Cell parts and their functions Cells and organisms Middle school biology Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cell-parts-and-functions/v/comparing-animal-and-plant-cellsmodal=1 Within cells special structures are responsible for particular functions and the cell membrane forms the boundary that controls what enters and leaves the cell. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone"
YouTube Link 2022-02-28T22:28Z 9.3M followers, 144.2K engagements
"Generalizing the washer method Applications of definite integrals AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-applications-of-integration-new/ab-8-11/v/generalizing-the-washer-method Looking at the example from the last video in a more generalized way. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-01-08T15:53Z 9.3M followers, 480.4K engagements
"Multivariable functions Multivariable calculus Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/thinking-about-multivariable-function/introduction-to-multivariable-calculus/v/multivariable-functions An introduction to multivariable functions and a welcome to the multivariable calculus content as a whole. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside"
YouTube Link 2016-05-05T22:37Z 9.3M followers, 1.5M engagements
"LearnStorm Growth Mindset: How to write a SMART goal Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/college-careers-more/learnstorm-growth-mindset-activities-us/elementary-and-middle-school-activities/setting-goals/a/activity-5-part-3-supercharge-your-growth Explore growth mindset with Thinky Pinky as he takes you through how to write a SMART goal. This video is part of the Growth Mindset Curriculum available with LearnStorm a back-to-school program aimed at helping students start the school year strong. The growth mindset curriculum helps"
YouTube Link 2018-08-10T17:21Z 9.3M followers, 1.2M engagements
"Fourier Series introduction Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-ac-analysis/v/ee-eulers-formula Fourier Series introduction education online learning learning lessons education online learning learning lessons"
YouTube Link 2016-08-04T16:58Z 9.3M followers, 1.5M engagements
"Prisoners' dilemma and Nash equilibrium Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/imperfect-competition/oligopoly-and-game-theory/v/prisoners-dilemma-and-nash-equilibrium Why two not-so-loyal criminals would want to snitch each other out Watch the next lesson:"
YouTube Link 2012-01-27T21:10Z 9.3M followers, 1.3M engagements
"Introduction to utility AP Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/basic-economic-concepts/cost-benefit-analysis/e/cost-benefit-analysis In this video the economic concepts of utility and marginal utility are introduced. online learning online class video class video tutorial online education utility marginal utility total utility AP Microeconomics Microeconomics Unit 1: Basic Economic concepts [---] Cost Benefit Analysis online learning online class video class"
YouTube Link 2018-10-19T19:51Z 9.3M followers, 257.6K engagements
"Budget Line Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/utility-maximization-with-indifference-curves/v/budget-line What I can buy with my income More free lessons at: http://www.khanacademy.org/videov=Uq5Wzs96tiw"
YouTube Link 2012-01-17T17:51Z 9.3M followers, 451.3K engagements
"Implied volatility Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/implied-volatility Created by Sal Khan. Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/introduction-to-the-black-scholes-formulautm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: Interest"
YouTube Link 2013-07-29T18:59Z 9.3M followers, 292.7K engagements
"Algebra: Solving Inequalities Solving linear inequalities. Algebra linear inequality equations less greater than CC_6_EE_5 CC_6_EE_8 CC_7_EE_4_b Algebra linear inequality equations less greater than CC_6_EE_5 CC_6_EE_8 CC_7_EE_4_b"
YouTube Link 2007-03-06T00:48Z 9.3M followers, 1.8M engagements
"Law of large numbers Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/expected-value-lib/v/law-of-large-numbers Introduction to the law of large numbers Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/binomial_distribution/v/binomial-distributionutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous lesson"
YouTube Link 2009-03-05T17:09Z 9.3M followers, 674.4K engagements
"Introduction to function inverses Functions and their graphs Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow:https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:inverse-functions-intro/v/introduction-to-function-inverses Introduction to Function Inverses Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/functions_and_graphs/function_inverses_2/e/inverses_of_functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson:"
YouTube Link 2010-07-16T18:12Z 9.3M followers, 1.3M engagements
"Second derivatives Advanced derivatives AP Calculus AB Khan Academy Sal finds the second derivative of y=6/x_. Second derivative is the derivative of the derivative of y. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivatives-advanced/ab-second-derivatives/e/second-derivativesutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivatives-advanced/ab-implicit-diff/v/implicit-differentiation-1utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB"
YouTube Link 2016-07-26T00:31Z 9.3M followers, 272K engagements
"Hinduism Introduction: Core ideas of Brahman Atman Samsara and Moksha History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/world-history-beginnings/ancient-india/v/hinduism-introduction-core-ideas-of-brahman-atman-samsara-and-moksha Hinduism is one of the oldest and largest religions in the world. It is also one of the most diverse in terms of practice. This video gives an overview of the central spiritual ideas of Brahman Atman Samsara and Moksha. Watch the next lesson:"
YouTube Link 2017-03-07T06:19Z 9.3M followers, 777.3K engagements
"Valence electrons and ionic compounds AP Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:valence-electrons-and-ionic-compounds/v/valence-electrons-and-ionic-compounds Want to explore more Check out the full Chemical bonding playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAYCvTHhMGsNvLS-btVPXRw&si=Y3r07zffIQjVpcET When forming ions elements typically gain or lose the minimum number of electrons"
YouTube Link 2019-09-13T21:23Z 9.3M followers, 50.1K engagements
"Scale drawings Geometry 7th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-scale-drawings/v/scaled-drawings-worked-examples Sal finds a missing side length in a scale drawing when given either a set of corresponding side lengths or one side length and the scale factor. View more lessons or practice this subject at"
YouTube Link 2018-05-31T18:46Z 9.3M followers, 221.5K engagements
"Equivalent expressions with distribution and negative numbers 7th grade Khan Academy Learn how to identify equivalent expressions using your knowledge of the distributive property and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-factoring/e/equiv-expressions-w-neg-and-distutm_source=YT&utm_medium=Desc&utm_campaign=7thgrade Watch the next lesson:"
YouTube Link 2015-08-04T23:00Z 9.3M followers, 140.7K engagements
"Long-run economic profit for perfectly competitive firms Microeconomics Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/production-cost-and-the-perfect-competition-model-temporary/ap-perfect-competition/v/long-run-supply-curve-in-constant-cost-perfectly-competitive-markets A firm in a perfectly competitive market might be able to earn economic profit in the short run but not in the long run. Learn about the process that brings a firm to normal economic profits in this video. AP(R)"
YouTube Link 2019-03-12T19:06Z 9.3M followers, 243.1K engagements
"The carbon cycle Middle school Earth and space science Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:climate-change/x3cd7525f789ab4f1:the-carbon-cycle/v/the-carbon-cycle Carbon moves through the environment in a continuous cycle shifting between reservoirs such as plants animals soil air water and rocks. Key processesphotosynthesis respiration decomposition and combustiondrive this movement. While the biological carbon cycle happens quickly the geological carbon"
YouTube Link 2025-06-24T16:55Z 9.3M followers, 44.7K engagements
"Solving equations with the distributive property Linear equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:linear-equations-parentheses/v/solving-equations-with-the-distributive-property Solving Equations with the Distributive Property Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2010-06-11T19:15Z 9.3M followers, 1M engagements
"Normative and positive statements Basic economics concepts AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/introduction-to-the-economic-way-of-thinking-macro/v/normative-and-positive-statements An introduction to normative statements and positive statements in economics. View more lessons or practice this subject at"
YouTube Link 2017-08-11T21:44Z 9.3M followers, 286.3K engagements
"Roman Empire and Christianity World History Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/world-history/ancient-medieval/christianity/v/roman-empire-and-christianity Overview of the changing relationship between the Roman Empire and Christianity from the time of Jesus to the reign of Theodosius. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/world-history/ancient-medieval/christianity/e/key-concepts--roman-culture Missed the previous lesson Watch here:"
YouTube Link 2017-01-14T02:21Z 9.3M followers, 352.9K engagements
"Income and expenditure views of GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/21/v/income-and-expenditure-views-of-gdp Looking at a simple model of an economy Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/gdp-topic/GDP-components-tutorial/v/components-of-gdputm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics Missed the"
YouTube Link 2012-02-04T23:33Z 9.3M followers, 458.6K engagements
"Gradient and contour maps Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/gradient-and-directional-derivatives/v/gradient-and-contour-maps Gradient vectors always point perpendicular to contour lines. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics"
YouTube Link 2016-05-12T00:57Z 9.3M followers, 229.1K engagements
"Solving unit rates problem Ratios proportions units and rates Pre-Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-rates/v/finding-unit-rates Finding a unit rate is a skill often required in real life. How fast is that plane flying How many lawns can you mow in an afternoon You see with our knowledge of ratios and fractions we can now solve unit rates problems like this. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2010-08-11T13:24Z 9.3M followers, 1.6M engagements
"The elements of a story Reading Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/ela/cc-2nd-reading-vocab/xfb4fc0bf01437792:cc-2nd-the-moon/xfb4fc0bf01437792:close-reading-fiction/v/a-storys-point-of-view-reading Did you know that many stories have a shape Let's discuss what that means as we explore the parts of a story. Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects"
YouTube Link 2020-04-10T20:29Z 9.3M followers, 1.2M engagements
"Gradient and graphs Learn how the gradient can be thought of as pointing in the "direction of steepest ascent". This is a rather important interpretation for the gradient. About Khan Academy: Khan Academy offers practice exercises instructional videos and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math science computer programming history art history economics and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art adaptive technology that identifies strengths and"
YouTube Link 2016-05-12T00:12Z 9.3M followers, 462.5K engagements
"DNA An introduction to DNA More free lessons at: http://www.khanacademy.org/videov=_-vZ_g7K6P0 About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education including math biology chemistry physics economics finance history"
YouTube Link 2009-09-22T18:22Z 9.3M followers, 1.8M engagements
"Consumer surplus introduction Consumer and producer surplus Microeconomics Khan Academy Consumer surplus as difference between marginal benefit and price paid Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/consumer-producer-surplus/consumer-producer-surplus-tut/v/total-consumer-surplus-as-areautm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson"
YouTube Link 2012-01-05T23:49Z 9.3M followers, 590.5K engagements
"Introduction to vertex form of a quadratic Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:vertex-form/v/vertex-form-intro Introduction to vertex form of a quadratic education online learning learning lessons education online learning learning lessons"
YouTube Link 2017-11-28T00:14Z 9.3M followers, 353.6K engagements
"CNN: Understanding the Crisis Video of Sal on CNN on October 10th discussing the credit crisis and a potential solution to it. More free lessons at: http://www.khanacademy.org/videov=_ZAlj2gu0eM"
YouTube Link 2008-10-28T20:23Z 9.3M followers, 262K engagements
"Introduction to integral calculus Accumulation and Riemann sums AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-1/v/introduction-to-integral-calculus The basic idea of Integral calculus is finding the area under a curve. To find it exactly we can divide the area into infinite rectangles of infinitely small width and sum their areascalculus is great for working with infinite things This idea is actually quite rich and it's also tightly related to"
YouTube Link 2017-09-07T00:09Z 9.3M followers, 910.7K engagements
"Credit default swaps Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/credit-crisis/v/credit-default-swaps Introduction to credit default swaps. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/credit-default-swaps-tut/v/credit-default-swaps-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here:"
YouTube Link 2008-09-28T19:39Z 9.3M followers, 1.2M engagements
"Calculus: Derivatives [--] Taking derivatives Differential Calculus Khan Academy More intuition of what a derivative is. Using the derivative to find the slope at any point along f(x)=x2 Watch the next lesson: https://www.khanacademy.org/math/differential-calculus/taking-derivatives/visualizing-derivatives-tutorial/v/derivative-intuition-moduleutm_source=YT&utm_medium=Desc&utm_campaign=DifferentialCalculus Missed the previous lesson"
YouTube Link 2007-10-03T17:50Z 9.3M followers, 1.3M engagements
"Introduction to ratios Ratios rates and percentages 6th grade Khan Academy Learn how to find the ratio between two things. In this video we find the ratio of apples to oranges. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/cc-6th-ratios-intro/e/representing-ratiosutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:"
YouTube Link 2014-03-25T19:42Z 9.3M followers, 1.5M engagements
"Integration by parts: x_cos(x)dx AP Calculus BC Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-bc/bc-integration-new/bc-6-11/v/antiderivative-of-xcosx-using-integration-by-parts Worked example of finding an integral using a straightforward application of integration by parts. Created by Sal Khan. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2013-01-28T16:53Z 9.3M followers, 622K engagements
"Vector intro for linear algebra Vectors and spaces Linear Algebra Khan Academy Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/e/scaling_vectorsutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/v/real-coordinate-spacesutm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity Ever try to visualize in"
YouTube Link 2015-06-17T20:01Z 9.3M followers, 1.2M engagements
"How to interpret a histogram Data and statistics 6th grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/histograms/v/interpreting-histograms Learn how to read histograms which summarize data by sorting it into buckets. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/histograms/e/creating-histogramsutm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson:"
YouTube Link 2015-02-05T01:09Z 9.3M followers, 490.1K engagements
"Introduction to waves Mechanical waves and sound Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mechanical-waves/v/introduction-to-waves Introduction to transverse and longitudinal waves. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mechanical-waves/v/amplitude-period-frequency-and-wavelength-of-periodic-wavesutm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson"
YouTube Link 2010-03-15T20:45Z 9.3M followers, 1.3M engagements
"Introduction to rational and irrational numbers Algebra I Khan Academy Learn what rational and irrational numbers are and how to tell them apart. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/irrational-numbers/e/recognizing-rational-and-irrational-numbersutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:"
YouTube Link 2013-12-23T19:58Z 9.3M followers, 2.4M engagements
"Real and nominal return Inflation Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/nominal-v-real-interest-rates-ap/v/real-and-nominal-return Inflation and real and nominal return. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2011-07-21T22:59Z 9.3M followers, 253.2K engagements
"Fluid mosaic model of cell membranes Biology Khan Academy Fluid mosaic model of cell membranes; the role of phospholipids proteins glycoproteins cholesterol and glycolipids in cell membranes. Watch the next lesson: https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/diffusion-videoutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/structure-of-a-cell/cytoskeleton-junctions-and-extracellular-structures/v/plant-cell-wallsutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on"
YouTube Link 2015-07-30T16:19Z 9.3M followers, 482.7K engagements
"Idea behind hypothesis testing Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-categorical-proportions/idea-significance-tests/v/examples-of-null-and-alternative-hypotheses Idea behind hypothesis testing. Null and alternative hypotheses. online learning online class video class video tutorial online education online learning online class video class video tutorial online education"
YouTube Link 2020-01-17T19:39Z 9.3M followers, 99.8K engagements
"Contradiction Vocabulary Khan Academy Lets explore the meaning and origin of the word contradiction. Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they can help their students develop the skills"
YouTube Link 2025-11-13T17:10Z 9.3M followers, 13.8K engagements
"Probability with discrete random variable example Random variables AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:probability-distributions-introduction/v/example-analyzing-discrete-probability-distribution Example analyzing discrete probability distribution. View more lessons or practice this subject at"
YouTube Link 2017-07-14T00:02Z 9.3M followers, 152.3K engagements
"Riemann approximation introduction Accumulation and Riemann sums AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-6-2/v/simple-riemann-approximation-using-rectangles Approximating the area under a curve using some rectangles. This is called a "Riemann sum". Created by Sal Khan. Watch the next lesson:"
YouTube Link 2013-01-24T16:34Z 9.3M followers, 795.9K engagements
"Discrete and continuous random variables Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/random-variables-stats-library/random-variables-discrete/v/discrete-and-continuous-random-variables Defining discrete and continuous random variables. Working through examples of both discrete and continuous random variables. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2012-12-06T18:12Z 9.3M followers, 2.4M engagements
"More on Nash equilibrium Game theory and Nash equilibrium Microeconomics Khan Academy Looking more closely at the definition of Nash Equilibrium Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/microeconomics/nash-equilibrium-tutorial/cartels-cheat-tutorial/v/why-parties-to-cartels-cheatutm_source=YT&utm_medium=Desc&utm_campaign=microeconomics Missed the previous lesson"
YouTube Link 2012-01-27T21:32Z 9.3M followers, 459K engagements
"The common-ion effect Equilibrium AP Chemistry Khan Academy Keep going Check out the next lesson and practice what youre learning: https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:equilibrium/x2eef969c74e0d802:solubility-equilibria/v/solubility-and-the-ph-of-the-solution The solubility of an ionic compound is decreased by the presence of a common ion (an ion that is also present in the compound); this is known as the common-ion effect. View more lessons or practice this subject at"
YouTube Link 2021-07-08T18:03Z 9.3M followers, 101.2K engagements
"National savings and investment Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/v/national-savings-and-investment-ap-macroeconomics-khan-academy The market for loanable funds brings savers and borrowers together. We can also represent the same idea using a mathematical model. In this video learn about the savings and investment identity. AP(R) Macroeconomics on Khan Academy:"
YouTube Link 2018-04-11T23:18Z 9.3M followers, 123.8K engagements
"Commodity money vs. Fiat money Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/definition-measurement-and-functions-of-money-ap/v/commodity-money-vs-fiat-money A brief look at how money has evolved over time from being printed on valuable substances (commodity money) to merely representing those valuable substances (commodity-backed money) to not representing anything at all (fiat money). Created by Grant"
YouTube Link 2016-06-20T23:44Z 9.3M followers, 283.7K engagements
"Enthalpy Thermodynamics Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/enthalpy Understanding why enthalpy can be viewed as "heat content" in a constant pressure system. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/chem19-calorimetryutm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson"
YouTube Link 2009-09-24T21:28Z 9.3M followers, 1.5M engagements
"US History Overview 1: Jamestown to the Civil War Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/us-history/history-survey/us-history-survey/v/us-history-overview-1-jamestown-to-the-civil-war Jamestown to the Civil War. Correction: Jamestown was the first successful ENGLISH settlement in what is now the United States. The Spanish actually settled St. Augustine Florida in [----]. More free lessons at: http://www.khanacademy.org/videov=ghgPq2wjQUQ About Khan Academy: Khan Academy is a nonprofit with a mission to"
YouTube Link 2011-04-23T00:00Z 9.3M followers, 1.2M engagements
"Keynesian economics Aggregate demand and aggregate supply Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/macroeconomics-keynesian-economics-and-its-critiques/v/keynesian-economics Contrasting Keynesian and Classical Thinking Watch the next lesson:"
YouTube Link 2012-03-19T19:31Z 9.3M followers, 1.4M engagements
"Introduction to the normal distribution Probability and Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/statistics-probability/modeling-distributions-of-data/more-on-normal-distributions/v/introduction-to-the-normal-distribution Exploring the normal distribution Watch the next lesson: https://www.khanacademy.org/math/probability/statistics-inferential/normal_distribution/v/normal-distribution-excel-exerciseutm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics Missed the previous"
YouTube Link 2009-04-29T01:24Z 9.3M followers, 1.3M engagements
"Scarcity Basic economics concepts Economics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/introduction-to-the-economic-way-of-thinking-macro/v/scarcity Introduction to scarcity as the notion underpinning the study of economics. View more lessons or practice this subject at"
YouTube Link 2017-08-07T18:14Z 9.3M followers, 408.1K engagements
"Chi-square statistic for hypothesis testing AP Statistics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/chi-square-statistic Chi-square statistic for hypothesis testing (chi-square goodness-of-fit test). View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/chi-square-statisticutm_source=youtube&utm_medium=desc&utm_campaign=apstatistics AP Statistics on Khan Academy:"
YouTube Link 2018-04-16T23:06Z 9.3M followers, 168.9K engagements
"Unit vectors Vectors Precalculus Khan Academy Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/precalculus/vectors-precalc/magnitude-direction/e/unit-vectorutm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Watch the next lesson: https://www.khanacademy.org/math/precalculus/vectors-precalc/magnitude-direction/v/scaling-unit-vectorutm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Missed the previous lesson"
YouTube Link 2014-03-11T22:19Z 9.3M followers, 802.8K engagements
"Greatest common factor explained Factors and multiples Pre-Algebra Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-gcf/v/greatest-common-divisor Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2006-11-18T00:53Z 9.3M followers, 1.7M engagements
"To two and too Frequently confused words Usage Grammar Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/humanities/grammar/usage-and-style/frequently-confused-words/v/to-two-too Another troublesome triad "to" "two" and "too". Let's set these frequently-confused words straight education online learning learning lessons education online learning learning lessons"
YouTube Link 2017-03-04T00:15Z 9.3M followers, 144K engagements
"Introduction to fractions Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/arithmetic-home/arith-review-fractions/fractions-intro/v/introduction-to-fractions"
YouTube Link 2013-08-02T16:30Z 9.3M followers, 531.5K engagements
"Understanding economic growth AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/economic-growth/v/understanding-economic-growth-ap-macroeconomics-khan-academy In this video learn about the definition of economic growth and how growth occurs. AP(R) Macroeconomics on Khan Academy: Macroeconomics is all about how an entire nations performance is determined and improved over time. Learn how factors like"
YouTube Link 2018-04-13T16:53Z 9.3M followers, 233K engagements
"What is a function Functions and their graphs Algebra II Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:evaluating-functions/v/what-is-a-function Watch the next lesson: https://www.khanacademy.org/math/algebra2/functions_and_graphs/function-introduction/v/difference-between-equations-and-functionsutm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson"
YouTube Link 2013-06-06T15:09Z 9.3M followers, 3.5M engagements
"Practice finding patterns in numbers 3rd grade Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/cc-third-grade-math/arithmetic-patterns-and-problem-solving/imp-patterns-in-arithmetic/v/practice-finding-patterns-in-numbers Learn how to spot a pattern in a sequence of numbers such as [--] [--] [--] [--]. Practice this lesson yourself on KhanAcademy.org right now:"
YouTube Link 2015-09-18T20:30Z 9.3M followers, 470.1K engagements
"Analyzing tone through word choice Reading Khan Academy Tone communicates how an author feels about their topic. How do good readers pick up on tone from clues left by the words an author chooses Lets discuss and find out together Khan Academy is a nonprofit organization with the mission of providing a free world-class education for anyone anywhere. We offer quizzes questions instructional videos and articles on a range of academic subjects including math biology chemistry physics history economics finance grammar preschool learning and more. We provide teachers with tools and data so they"
YouTube Link 2020-07-06T18:16Z 9.3M followers, 372.4K engagements
"Real GDP and nominal GDP GDP: Measuring national income Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/economic-iondicators-and-the-business-cycle/real-vs-nominal-gdp/v/real-gdp-and-nominal-gdp Using real GDP as a measure of actual productivity growth Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/gdp-topic/real-nominal-gdp-tutorial/v/gdp-deflatorutm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics"
YouTube Link 2012-02-10T19:20Z 9.3M followers, 925.7K engagements
"Water as a solvent Water acids and bases Biology Khan Academy Water as a solvent. Polar solutes. Hydrophilic and hydrophobic substances. Watch the next lesson: https://www.khanacademy.org/science/biology/water-acids-and-bases/cohesion-and-adhesion/v/capillary-action-and-why-we-see-a-meniscusutm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson https://www.khanacademy.org/science/biology/water-acids-and-bases/hydrogen-bonding-in-water/v/hydrogen-bonding-in-waterutm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful From atoms to"
YouTube Link 2015-07-01T19:21Z 9.3M followers, 221.8K engagements
"Displacement from time and velocity example One-dimensional motion Physics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/displacement-from-time-and-velocity-example Worked example of calculating displacement from time and velocity. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2011-06-11T21:48Z 9.3M followers, 1.2M engagements
"Arteries vs. veins-what's the difference Circulatory system physiology NCLEX-RN Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/v/arteries-vs-veins-what-s-the-difference Learn some important differences between arteries (high pressure/low volume) and veins (low pressure/high volume). Watch the next lesson:"
YouTube Link 2017-12-29T17:58Z 9.3M followers, 328.3K engagements
"Basic fractional exponents Exponent expressions and equations Algebra I Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:exp/x2ec2f6f830c9fb89:rational-exp/v/basic-fractional-exponents Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/exponent-equations/fractional-exponents-tut/e/exponents_4utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson:"
YouTube Link 2013-08-02T21:18Z 9.3M followers, 1.1M engagements
"Protons neutrons and electrons in atoms Chemistry Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:atomic-structure/v/protons-neutrons-and-electrons-in-atoms Want to explore more Check out the full Atoms isotopes and ions playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HBSf5CVmr7BQ-DAayIsE71N&si=-2Ff6EXmM07XFU34 Atoms are made up of three types of subatomic particles: protons neutrons and electrons. Protons"
YouTube Link 2023-12-13T22:25Z 9.3M followers, 74K engagements
"Put-call parity Finance & Capital Markets Khan Academy Put-Call Parity. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/put-call-options/v/long-straddleutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/put-call-options/v/put-as-insuranceutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: Options allow"
YouTube Link 2011-03-16T17:29Z 9.3M followers, 415.4K engagements
"Nominal interest real interest and inflation calculations AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/nominal-v-real-interest-rates-ap/v/nominal-interest-real-interest-and-inflation-calculations-ap-macroeconomics-khan-academy2 The market for loanable funds brings savers and borrowers together. We can also represent the same idea using a mathematical model. In this video learn about the savings and investment identity. AP(R)"
YouTube Link 2018-04-11T21:33Z 9.3M followers, 248.1K engagements
"Electron Transport Chain Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/in-in-class-11-biology-india/x9d1157914247c627:respiration-in-plants/x9d1157914247c627:electron-transport-system-and-oxidative-phosphorylation/v/electron-transport-chain Overview of the Electron Transport Chain More free lessons at: http://www.khanacademy.org/videov=mfgCcFXUZRk About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free world-class education for anyone anywhere. We believe learners of all ages should have"
YouTube Link 2009-12-11T22:20Z 9.3M followers, 2.7M engagements
"Limits from graphs Limits and continuity AP Calculus AB Khan Academy Worked examples of estimating limits of a function from its graph. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-limits-continuity/ab-limits-numerically/v/approximating-limit-from-tableutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson https://www.khanacademy.org/math/ap-calculus-ab/ab-limits-continuity/ab-limits-graphically/v/approximating-limit-graphically-and-numericallyutm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB AP Calculus AB on Khan Academy: Bill"
YouTube Link 2017-09-27T17:41Z 9.3M followers, 172K engagements
"Irregular plural nouns words that end in -en Grammar Khan Academy The plural of "whale" is "whales" but what's the plural of "child" David Khan Academy's resident grammarian explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-nouns/e/irregular-plural-nouns---enutm_source=YT&utm_medium=Desc&utm_campaign=grammar Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-nouns/v/irregular-plurals-the-base-pluralutm_source=YT&utm_medium=Desc&utm_campaign=grammar Missed the previous lesson"
YouTube Link 2016-01-27T23:30Z 9.3M followers, 524.6K engagements
"Optimal point on budget line Microeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/microeconomics/choices-opp-cost-tutorial/utility-maximization-with-indifference-curves/v/types-of-indifference-curves Using indifference curves to think about the point on the budget line that maximizes total utility Watch the next lesson:"
YouTube Link 2012-01-17T19:31Z 9.3M followers, 448.6K engagements
"Consumption function basics Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/macroeconomics-the-consumption-function/v/consumption-function-basics The basic idea of a consumption function Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/income-and-expenditure-topic/consumption-function/v/generalized-linear-consumption-functionutm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics"
YouTube Link 2012-04-03T21:57Z 9.3M followers, 587.2K engagements
"Translation (mRNA to protein) Biomolecules MCAT Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/translation/v/translation-mrna-to-protein A deep dive into how mRNA is translated into proteins with the help of ribosomes and tRNA. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/v/differences-in-translation-between-prokaryotes-and-eukaryotesutm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson"
YouTube Link 2016-06-07T18:29Z 9.3M followers, 1.4M engagements
"Introduction to pH Biology Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/science/high-school-biology/hs-biology-foundations/hs-ph-acids-and-bases/v/introduction-to-ph Want to explore more Check out the full Solutions acids and bases playlist here: https://youtube.com/playlistlist=PLSQl0a2vh4HAHzfFIPU3q0hDdHKTEPrz5&si=ODwD0LbDD3IH8KdB The pH scale is used to determine the acidity or basicity (alkalinity) of a substance. Acidic substances have pH values below [--] while basic substances have pH values above 7;"
YouTube Link 2017-11-29T20:42Z 9.3M followers, 118.1K engagements
"Functions of money Financial sector AP Macroeconomics Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/macroeconomics/monetary-system-topic/macro-definition-measurement-and-functions-of-money/v/functions-of-money What does money actually do Economists usually subdivide its functions into three categories: A medium of exchange a store of value and a unit of value. Created by Grant Sanderson. View more lessons or practice this subject at"
YouTube Link 2016-06-20T23:43Z 9.3M followers, 162K engagements
"Mortgage-backed securities I Finance & Capital Markets Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/credit-crisis/v/mortgage-backed-securities-i Part I of the introduction to mortgage-backed securities. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/mort-backed-secs-tut/v/mortgage-backed-securities-iiutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets"
YouTube Link 2007-08-31T00:47Z 9.3M followers, 714.6K engagements
"Proof of fundamental theorem of calculus AP Calculus AB Khan Academy Courses on Khan Academy are always 100% free. Start practicingand saving your progressnow: https://www.khanacademy.org/math/ap-calculus-ab/ab-integration-new/ab-integration-optional/v/proof-of-fundamental-theorem-of-calculus The first part of the fundamental theorem of calculus tells us that if we define () to be the definite integral of function from some constant _ to _ then _ is an antiderivative of . In other words '()=(_). See why this is so. Created by Sal Khan. Watch the next lesson:"
YouTube Link 2013-02-08T18:44Z 9.3M followers, 392.1K engagements
"Introduction to the Black-Scholes formula Finance & Capital Markets Khan Academy Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/black-scholes/v/implied-volatilityutm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/interest-rate-swaps-tut/v/interest-rate-swap-2utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan"
YouTube Link 2013-07-29T18:43Z 9.3M followers, 1.1M engagements
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