00:08 – Challenging Word Problems #1
02:00 – Challenging Word Problems #2
03:33 – Challenging Word Problems #3
05:47 – Challenging Word Problems #4
09:30 – Challenging Word Problems #5
11:30 – Challenging Word Problems #6
13:36 – Challenging Word Problems #7
19:21 – Challenging Word Problems #8
24:15 – Challenging Word Problems #9
25:44 – Challenging Word Problems #10
30:06 – Challenging Word Problems #11
35:28 – Challenging Word Problems #12