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[@cognitoedu](/creator/youtube/cognitoedu)
"GCSE Biology - What is DNA (Structure and Function of DNA)"  
[YouTube Link](https://youtube.com/watch?v=T6_wKPAbf2k) [@cognitoedu](/creator/youtube/cognitoedu) 2020-03-08T13:00Z 1.1M followers, 691.9K engagements


"GCSE Physics - Energy Resources - Renewables & Non-renewables Uses Sources of Electricity"  
[YouTube Link](https://youtube.com/watch?v=N5mHKqcit9I) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-08-12T14:15Z 1.1M followers, 10.2K engagements


"GCSE Maths - Types of Triangle (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=NAxRP38GtzQ) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-03-17T10:30Z 1.1M followers, 135.4K engagements


"GCSE Physics - Permanent & Induced Magnets"  
[YouTube Link](https://youtube.com/watch?v=bOZ2Hk2hKLE) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-06-10T10:55Z 1.1M followers, 248.8K engagements


"GCSE Biology - What are DNA Mutations (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=3jwDl7nYBPM) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-03-22T10:00Z 1.1M followers, 397.7K engagements


"GCSE Chemistry - Covalent Bonding - Formation Drawing Covalent Bonds (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=7IkYm7ZgiAw) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-17T16:12Z 1.1M followers, 65.6K engagements


"GCSE Physics - Newton's 1st & 2nd Laws Circular Motion Inertia (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=D8XOm4swxOU) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-09-24T14:15Z 1.1M followers, 7772 engagements


"How to Estimate in Maths (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=JTQ2Wh5E2js) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-05-27T09:30Z 1.1M followers, 264.8K engagements


"GCSE Chemistry - Le Chatelier's Principle - Position of Equilibrium in Reversible Reactions"  
[YouTube Link](https://youtube.com/watch?v=KZPO23kia_o) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-07-31T14:15Z 1.1M followers, 18.9K engagements


"GCSE Biology - What is Microscopy (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=PB97svr7Ye8) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-09-05T09:30Z 1.1M followers, 353.1K engagements


"GCSE Chemistry - Group X Elements - Alkali Metals Properties Reactivity (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=TGZs93DzMDY) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-10T14:16Z 1.1M followers, 41.7K engagements


"GCSE Maths - What are Ratios & How to Simplify Them (Part 1) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=UcPVAh4igpI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-11-29T10:15Z 1.1M followers, 156.8K engagements


"GCSE Maths - How to find the Area and Circumference of a Circle (Circles Part 1) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=X3ZyTM78ygk) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-05-16T09:30Z 1.1M followers, 150.1K engagements


"GCSE Physics - Nuclear Fusion"  
[YouTube Link](https://youtube.com/watch?v=g_BUbEIyaz8) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-10-31T14:12Z 1.1M followers, 281.1K engagements


"GCSE Chemistry - Electronic Structure (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=kvTzdD1eGUQ) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-03T14:19Z 1.1M followers, 31.6K engagements


"GCSE Biology - How to convert between nm um mm m and km (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=rJJrR8h-DtA) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-10-10T09:00Z 1.1M followers, 276.9K engagements


"GCSE Maths - How to Find the Area of Rectangles Parallelograms Triangles and Trapeziums"  
[YouTube Link](https://youtube.com/watch?v=tN95TLKpmVQ) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-05-09T09:15Z 1.1M followers, 181K engagements


"GCSE Maths - What are Cubic Graphs & How to Plot Them (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=wCA1VskgTag) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-11-18T10:15Z 1.1M followers, 201.8K engagements


"GCSE Physics - Contact & Non-contact Forces (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=xdrE0kP8GTM) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-08-21T14:15Z 1.1M followers, 12.7K engagements


"GCSE Chemistry - Ionic Compounds - Structure Properties Formula (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=ybi6kQHKVws) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-16T14:27Z 1.1M followers, 40.3K engagements


"GCSE Chemistry - Purity and Formulations"  
[YouTube Link](https://youtube.com/watch?v=-OtJI-R-4rU) [@cognitoedu](/creator/youtube/cognitoedu) 2019-05-02T12:35Z 1.1M followers, 189.5K engagements


"GCSE Biology - Levels of Organisation - Cells Tissues Organs and Organ Systems (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=MB6mE6weCS4) [@Cognitoedu](/creator/youtube/Cognitoedu) 2022-05-15T09:00Z 1.1M followers, 547.9K engagements


"GCSE Physics - Particle Theory & States of Matter"  
[YouTube Link](https://youtube.com/watch?v=OTksau0_VoI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-10-02T13:20Z 1.1M followers, 733.4K engagements


"GCSE Biology - Communicable Disease Bacterial Disease (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=-30_21Juyek) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-03-14T15:23Z 1.1M followers, 27.4K engagements


"GCSE Chemistry - Addition Polymers & Polymerisation (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=1ZUg6ZC3ltA) [@cognitoedu](/creator/youtube/cognitoedu) 2020-03-17T17:19Z 1.1M followers, 531.9K engagements


"GCSE Biology - Variation and Evolution (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=4PtOgToaKP8) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-04-15T14:35Z 1.1M followers, 46.9K engagements


"GCSE Biology - Genetic Engineering GMO (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=4Wu86ACPTKY) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-05-02T13:48Z 1.1M followers, 40.1K engagements


"GCSE Physics - How Transformers Work (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=7RtBUEZbKmI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-04-01T10:00Z 1.1M followers, 501.1K engagements


"GCSE Physics - Factors Affecting Gas Pressure"  
[YouTube Link](https://youtube.com/watch?v=9PwzPDJ7GYc) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-10-13T12:27Z 1.1M followers, 209.6K engagements


"GCSE Chemistry - Crude Oil and Fractional Distillation"  
[YouTube Link](https://youtube.com/watch?v=CjmriZq5xRo) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-04-28T07:12Z 1.1M followers, 821.9K engagements


"GCSE Chemistry - Percentage Yield - Theoretical & Actual Yield Calculations (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=DIird9oZVII) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-07-03T15:15Z 1.1M followers, 13.1K engagements


"GCSE Physics - Conduction Convection and Radiation"  
[YouTube Link](https://youtube.com/watch?v=Eizsm5V8c_c) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-06-25T15:38Z 1.1M followers, 1.6M engagements


"GCSE Chemistry - What is a 'Carbon Footprint' - How to Reduce Carbon Footprint"  
[YouTube Link](https://youtube.com/watch?v=Mvp97__BP84) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-05-27T11:59Z 1.1M followers, 122.6K engagements


"GCSE Physics - Resolving Vectors & Scale Drawing How to Find Resultant Forces (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=Ry5-WEiTUs4) [@cognitoedu](/creator/youtube/cognitoedu) 2025-09-11T14:15Z 1.1M followers, 10.1K engagements


"GCSE Physics - Static Electricity"  
[YouTube Link](https://youtube.com/watch?v=St_KzxJqUGA) [@cognitoedu](/creator/youtube/cognitoedu) 2019-09-29T13:45Z 1.1M followers, 625.8K engagements


"GCSE Chemistry - Types of Covalent Structures: Simple Molecular & Giant Covalent Structures"  
[YouTube Link](https://youtube.com/watch?v=SxuldWdqFB0) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-18T14:24Z 1.1M followers, 31K engagements


"GCSE Biology - Mitosis Chromosomes Cell Division Cytokinesis (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=UsovRxQAUZ4) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-04-17T13:41Z 1.1M followers, 96.7K engagements


"GCSE Chemistry - Purity & Formulations (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=X1zptKXIEfY) [@cognitoedu](/creator/youtube/cognitoedu) 2025-10-27T17:08Z 1.1M followers, XXX engagements


"GCSE Physics - Nuclear Fission"  
[YouTube Link](https://youtube.com/watch?v=ZKHpix5dgAU) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-10-29T14:23Z 1.1M followers, 394.7K engagements


"GCSE Maths - Volumes of Cylinders and Prisms (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=_QdIzOVcjNI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-07-11T12:48Z 1.1M followers, 193.5K engagements


"GCSE Biology - Characteristics of Living Things (Organisms) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=aGDFNZApXXI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-06-13T09:15Z 1.1M followers, 527.6K engagements


"GCSE Physics - What is an Orbit (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=cTJLYfEHIuA) [@cognitoedu](/creator/youtube/cognitoedu) 2020-04-29T09:15Z 1.1M followers, 175.2K engagements


"GCSE Biology - What are Nutrients Carbohydrates Lipids Proteins Vitamins & Minerals"  
[YouTube Link](https://youtube.com/watch?v=dN7c2JniR8U) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-11-14T10:30Z 1.1M followers, 413K engagements


"GCSE Maths - How to Calculate Simple Interest (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=fqDOKz2m5rY) [@Cognitoedu](/creator/youtube/Cognitoedu) 2021-02-11T10:00Z 1.1M followers, 490.4K engagements


"GCSE Biology - Health & Disease (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=jRzIhanvvVU) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-03-11T15:22Z 1.1M followers, 39.3K engagements


"GCSE Biology - The Brain"  
[YouTube Link](https://youtube.com/watch?v=jvIr7b0roYI) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-01-09T14:00Z 1.1M followers, 289.2K engagements


"GCSE Biology - Immune System & Defences Types of White Blood Cell (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=k1oCiR9Y2zQ) [@cognitoedu](/creator/youtube/cognitoedu) 2025-03-18T15:34Z 1.1M followers, 54.2K engagements


"GCSE Chemistry - Moles & Mass - Avogadro's Constant Formula for Moles Mass & Mr (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=kBlmEfS_P00) [@Cognitoedu](/creator/youtube/Cognitoedu) 2025-06-26T14:41Z 1.1M followers, 54.7K engagements


"GCSE Physics - Motor Effect"  
[YouTube Link](https://youtube.com/watch?v=ltpPhpi-CC4) [@cognitoedu](/creator/youtube/cognitoedu) 2019-06-12T12:24Z 1.1M followers, 492.7K engagements


"What is Diffusion How Does it Work What Factors Affect it (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=lxHMJaXOzP4) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-11-11T10:15Z 1.1M followers, 612.4K engagements


"GCSE Biology - Pros and Cons of Sexual and Asexual Reproduction (Part 2) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=mtYCd2LAr_w) [@cognitoedu](/creator/youtube/cognitoedu) 2020-03-29T11:00Z 1.1M followers, 196.7K engagements


"GCSE Biology - Enzymes - How Temperature and pH Affect Rate of Reaction (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=n9He_FK6nao) [@cognitoedu](/creator/youtube/cognitoedu) 2022-05-01T09:19Z 1.1M followers, 302.3K engagements


"How to Estimate the Square Root of Non-Square Numbers (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=qd9PvihkdS4) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-05-28T09:30Z 1.1M followers, 170.9K engagements


"GCSE Physics - Sound Waves and Hearing"  
[YouTube Link](https://youtube.com/watch?v=s9wZkP64rAc) [@cognitoedu](/creator/youtube/cognitoedu) 2020-02-26T13:00Z 1.1M followers, 435.2K engagements


"GCSE Maths - What on Earth are Surds And How do You Simplify Them (Part 1/3) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=wzAotwNPhm8) [@cognitoedu](/creator/youtube/cognitoedu) 2020-06-29T09:00Z 1.1M followers, 993.4K engagements


"GCSE Maths - How to Find the Equation of a Straight Line (y = mx + c) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=ys0Dxj-jKTk) [@cognitoedu](/creator/youtube/cognitoedu) 2020-10-11T09:30Z 1.1M followers, 696.2K engagements


"GCSE Physics - Radioactive Decay and Half Life"  
[YouTube Link](https://youtube.com/watch?v=zXw2cOSBB8E) [@Cognitoedu](/creator/youtube/Cognitoedu) 2019-11-30T16:13Z 1.1M followers, 897.5K engagements


"GCSE Chemistry - The History of the Atom Models & Theories (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=9WNFwOqb_24) [@cognitoedu](/creator/youtube/cognitoedu) 2025-06-02T14:30Z 1.1M followers, 47.7K engagements


"GCSE Physics - Distance-Time Graphs"  
[YouTube Link](https://youtube.com/watch?v=RM02SnuJ0MY) [@cognitoedu](/creator/youtube/cognitoedu) 2019-12-03T15:23Z 1.1M followers, 752.7K engagements


"GCSE Maths - What are Chords Segments Arcs and Sectors (Circles Part 2) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=nDMpINuq1w0) [@cognitoedu](/creator/youtube/cognitoedu) 2021-05-23T10:15Z 1.1M followers, 94.7K engagements


"GCSE Physics - Scalar & Vector Quantities - What They Are Examples How to Represent Vectors"  
[YouTube Link](https://youtube.com/watch?v=D0Hkd5TaaTQ) [@cognitoedu](/creator/youtube/cognitoedu) 2025-09-08T14:15Z 1.1M followers, 13.8K engagements


"GCSE Chemistry - Cracking & Alkenes - Catalytic & Steam Cracking Equations (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=LfweGr7Y8L4) [@cognitoedu](/creator/youtube/cognitoedu) 2025-10-24T14:15Z 1.1M followers, 1361 engagements


"A-Level Biology - Factors that Affect Enzyme Action (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=lS3jX-yXXc4) [@cognitoedu](/creator/youtube/cognitoedu) 2025-10-22T11:15Z 1.1M followers, XXX engagements


"A-Level Biology - ATP - Structure How it's Synthesised & Broken Down Functions (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=pcT72Wg4DX4) [@cognitoedu](/creator/youtube/cognitoedu) 2025-10-20T14:30Z 1.1M followers, 1151 engagements


"GCSE Biology - How the Eye Works (Part 2) - Accommodation"  
[YouTube Link](https://youtube.com/watch?v=-BqvOucCTYg) [@cognitoedu](/creator/youtube/cognitoedu) 2020-01-19T10:29Z 1.1M followers, 382.7K engagements


"GCSE Chemistry - Elements Isotopes & Relative Atomic Mass (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=-FBk8cNvJds) [@cognitoedu](/creator/youtube/cognitoedu) 2025-05-27T16:04Z 1.1M followers, 79.1K engagements


"How to Round Numbers to Significant Figures (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=-X0amVzMKFo) [@cognitoedu](/creator/youtube/cognitoedu) 2020-05-26T09:30Z 1.1M followers, 616.7K engagements


"GCSE Maths - How to Solve Best Buy Questions (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=03JX5c2AY8M) [@cognitoedu](/creator/youtube/cognitoedu) 2020-12-31T10:30Z 1.1M followers, 106.4K engagements


"GCSE Physics - Kinetic Energy How to Calculate it (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=244-42IQGYU) [@cognitoedu](/creator/youtube/cognitoedu) 2025-07-28T14:15Z 1.1M followers, 26.2K engagements


"GCSE Biology - Food Tests Practicals (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=2fPwfvbBRT0) [@cognitoedu](/creator/youtube/cognitoedu) 2025-02-26T16:00Z 1.1M followers, 120.9K engagements


"GCSE Biology - The Circulatory System The Heart (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=31nyaBdC-q8) [@cognitoedu](/creator/youtube/cognitoedu) 2025-03-07T18:11Z 1.1M followers, 212.7K engagements


"GCSE Physics - Specific Latent Heat"  
[YouTube Link](https://youtube.com/watch?v=3itqmCtmJPc) [@cognitoedu](/creator/youtube/cognitoedu) 2019-10-10T12:48Z 1.1M followers, 356.6K engagements


"GCSE Chemistry - Reversible Reactions & Dynamic Equilibrium (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=5rC6f_P_A48) [@cognitoedu](/creator/youtube/cognitoedu) 2025-07-30T14:15Z 1.1M followers, 26.9K engagements


"GCSE Maths - How to Solve Simultaneous Equations - Using the Elimination Technique (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=68hMhae269k) [@cognitoedu](/creator/youtube/cognitoedu) 2022-01-16T16:09Z 1.1M followers, 595.1K engagements


"GCSE Maths - Using Scales on Maps and Scale Diagrams (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=6XpBX-7cDPE) [@cognitoedu](/creator/youtube/cognitoedu) 2022-02-20T10:30Z 1.1M followers, 230.1K engagements


"How to use BODMAS (Order of Operations)"  
[YouTube Link](https://youtube.com/watch?v=70cAYYCJBuQ) [@cognitoedu](/creator/youtube/cognitoedu) 2020-02-17T13:00Z 1.1M followers, 608.8K engagements


"GCSE Physics - Electromagnetism"  
[YouTube Link](https://youtube.com/watch?v=79_SF5AZtzo) [@cognitoedu](/creator/youtube/cognitoedu) 2019-06-11T11:11Z 1.1M followers, 954.7K engagements


"GCSE Biology - How the Eye Works (Part 1) - Structure of the Eye & Iris Reflex"  
[YouTube Link](https://youtube.com/watch?v=9SGAicn9rXY) [@Cognitoedu](/creator/youtube/Cognitoedu) 2020-01-13T13:19Z 1.1M followers, 544.6K engagements


"GCSE Physics - Astronomy: How the Universe is made of Galaxies Solar Systems Stars and Planets"  
[YouTube Link](https://youtube.com/watch?v=AgwSdQzN4H4) [@cognitoedu](/creator/youtube/cognitoedu) 2020-04-22T09:15Z 1.1M followers, 295.5K engagements


"GCSE Biology - Blood Vessels (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=AlSQEs694qY) [@cognitoedu](/creator/youtube/cognitoedu) 2018-11-20T13:06Z 1.1M followers, 721.1K engagements


"GCSE Biology - Gas Exchange and Lungs (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=B44n2SMLv-s) [@cognitoedu](/creator/youtube/cognitoedu) 2018-11-16T13:43Z 1.1M followers, 1M engagements


"GCSE Biology - The Nervous System Reflex Arcs Explained (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=BnsZo4j1YvU) [@cognitoedu](/creator/youtube/cognitoedu) 2025-04-04T16:17Z 1.1M followers, 99.7K engagements


"GCSE Physics - Nuclear Decay Equations"  
[YouTube Link](https://youtube.com/watch?v=CaYoDxWxww8) [@cognitoedu](/creator/youtube/cognitoedu) 2019-10-20T09:55Z 1.1M followers, 421.1K engagements


"GCSE Maths - How to Expand Double Brackets (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=Dvo1Q-yBBhk) [@cognitoedu](/creator/youtube/cognitoedu) 2020-06-22T09:00Z 1.1M followers, 220.3K engagements


"GCSE Chemistry - Compounds Molecules & Mixtures (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=E15yF8dNGr8) [@cognitoedu](/creator/youtube/cognitoedu) 2025-05-29T14:21Z 1.1M followers, 49K engagements


"GCSE Maths - X Angle Rules to Know (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=FD9DVFBpCMI) [@cognitoedu](/creator/youtube/cognitoedu) 2021-08-08T08:15Z 1.1M followers, 220.4K engagements


"How to Use Prime Factor Trees to find Prime Factors"  
[YouTube Link](https://youtube.com/watch?v=FL4MPqfbFbw) [@cognitoedu](/creator/youtube/cognitoedu) 2020-03-09T13:00Z 1.1M followers, 163.6K engagements


"GCSE Chemistry - Strong Acids & Weak Acids pH & Concentration of Hydrogen Ions (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=FOgZgMBbnXM) [@cognitoedu](/creator/youtube/cognitoedu) 2025-07-08T14:15Z 1.1M followers, 17.8K engagements


"GCSE Biology - Digestive Enzymes (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=G2y6_VShnwc) [@cognitoedu](/creator/youtube/cognitoedu) 2025-02-27T17:36Z 1.1M followers, 90.9K engagements


"What are Prime Numbers and Composite Numbers"  
[YouTube Link](https://youtube.com/watch?v=GjzKpryaTYk) [@cognitoedu](/creator/youtube/cognitoedu) 2020-03-02T13:00Z 1.1M followers, 167.4K engagements


"What is Standard Form (also known as Scientific Notation) (Part 1/4) (2026/27 exams)"  
[YouTube Link](https://youtube.com/watch?v=H3ewmorcYjU) [@cognitoedu](/creator/youtube/cognitoedu) 2020-06-01T10:46Z 1.1M followers, 465.5K engagements


"GCSE Maths - Alternate Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)"  
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"GCSE Chemistry - Exothermic & Endothermic Reactions - Reaction Profiles Activation Energy"  
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"GCSE Chemistry - States of Matter & Changing State"  
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[YouTube Link](https://youtube.com/watch?v=ia51_eXDAQ0) [@cognitoedu](/creator/youtube/cognitoedu) 2020-11-08T10:00Z 1.1M followers, 360.5K engagements


"GCSE Physics - Parallel Circuits"  
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"GCSE Maths - How to Factorise Quadratics by Completing the Square (Part X - Factorise When a=1)"  
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"GCSE Physics - How Moments Work - Spanners and Seesaws"  
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"GCSE Physics - Gravity Weight and GPE"  
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"GCSE Biology - Drugs - Painkillers vs Antibiotics - Relief vs Treatment (2026/27 exams)"  
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"GCSE Chemistry - Metallic Bonding - Properties of Metals Alloys & Pure Metals (2026/27 exams)"  
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"GCSE Chemistry - Group X & Group X Elements - Halogens & Noble Gases Properties Trends"  
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"GCSE Biology - Osmosis (2026/27 exams)"  
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"GCSE Chemistry - Alcohols"  
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"GCSE Chemistry - What is a Hydrocarbon What are Alkanes Hydrocarbons and Alkanes Explained"  
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"GCSE Physics - Acceleration - Rate of Change in Velocity Equations (2026/27 exams)"  
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"How to Convert Fractions to Recurring Decimals (Proportions Part 3/6) (2026/27 exams)"  
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"GCSE Maths - How to Find the Gradient of a Straight Line (2026/27 exams)"  
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