15:27

Euler Squares - Numberphile

17:12

A Problem with Rectangles - Numberphile

12:19

Why do calculators get this wrong? (We don't know!)

26:37

Numberphile's Square-Sum Problem was solved! #SoME2

18:31

The Light Switch Problem - Numberphile

13:48

Squaring Primes - Numberphile

38:33

Pythagoras twisted squares: Why did they not teach you any of this in school?

26:01

The shape that should be impossible.