1:21:55

Lesson 2 - Newton's Laws

1:07:34

Lesson 9 - Cartooning and Demos

13:47

Hardy's Integral

1:25:16

Lesson 3 - Momentum and Energy

1:02:54

Lesson 8 - Radioactivity

55:16

Coping With Feelings - Clayton C. Barbeau

2:44:38

Dan's Way Back To Health & Fitness

1:17:30

Lesson 7 - Electricity and Magnetism