19:51

Sec 7 1 Video 2

59:07

Algebra For Beginners - Basic Introduction

32:44

The Strange Physics Principle That Shapes Reality

18:41

Sec 6 2 Video 2

14:49

How to Compute Square Roots in Your Head

34:12

Sec 10 1 Video

30:31

Climbing past the complex numbers.

28:23

Sec 5 5 Video 1