11:06
The Map of Mathematics
21:45
Why You Can't Bring Checkerboards to Math Exams
12:50
I visited the world's hardest math class
4:38
The 7 Levels of Calculus
17:14
the 5 hardest exams in the world
34:29
I Took an IQ Test to Find Out What it Actually Measures
14:20
ALL OF PHYSICS explained in 14 Minutes
7:36