Book reading and more
10:37
An Impossible Test Question
4:15:07
Study and gaming
12:58
these are the habits of the top 1% students, that you can do.
8:44
Richard Feynman Learned Calculus With This Book
20:53
Week 2 - Hint for the preparatory problems - Dynamics of Mechanical systems
10:52
A Nice Algebra Problem | Math Olympiad | Solve for x values?
21:43
Pasé 100 Horas en las Pirámides!
5:53