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[@zfruhling](/creator/youtube/zfruhling)
"Introduction to Economics: Scarcity and Opportunity Cost"  
[YouTube Link](https://youtube.com/watch?v=12ZlNwgxsOI) [@zfruhling](/creator/youtube/zfruhling) 2020-06-03T14:56Z 1960 followers, 143.6K engagements


""Earth Sprites" TI Extended BASIC Type-In Program by William K. Balthrop Home Computer Magazine"  
[YouTube Link](https://youtube.com/watch?v=C511xufFFok) [@zfruhling](/creator/youtube/zfruhling) 2025-10-22T03:26Z 1960 followers, XX engagements


"Sprite Demo TI Extended BASIC Type-In Program TisHUG News Digest September 1988"  
[YouTube Link](https://youtube.com/watch?v=khPIfTY4ZuE) [@zfruhling](/creator/youtube/zfruhling) 2025-10-22T01:58Z 1960 followers, XX engagements


""Linear Kaleidoscope" TI BASIC Type-In Program by Melody Covington Home Computer Magazine Vol. 4"  
[YouTube Link](https://youtube.com/watch?v=PQ2Y9sxLCiw) [@zfruhling](/creator/youtube/zfruhling) 2025-10-20T01:49Z 1960 followers, XX engagements


""Color Kaleidoscope" TI BASIC Type-In Program by Melody Covington Home Computer Magazine"  
[YouTube Link](https://youtube.com/watch?v=m8BtkA7fIrc) [@zfruhling](/creator/youtube/zfruhling) 2025-10-20T01:03Z 1960 followers, XX engagements


""Little Stars" TI BASIC Type-In Program by Melody Covington Home Computer Magazine Vol. X No. 4"  
[YouTube Link](https://youtube.com/watch?v=D4w-b5lFddE) [@zfruhling](/creator/youtube/zfruhling) 2025-10-19T00:33Z 1950 followers, XX engagements