The Freshman's Dream (a classic mistake) - Numberphile

13:48
Squaring Primes - Numberphile

12:04
343867 and Tetrahedral Numbers - Numberphile

33:01
The Man Who Almost Broke Math (And Himself...)

27:40
The Biggest Misconception in Physics

25:52
The mystery of pi and 355/113

20:19
Amateurs Just Solved a 30-Year-Old Math Problem

21:19
What are these symbols? - Numberphile

18:36