01:26 – Challenging Word Problems #1
04:27 – Challenging Word Problems #2
06:16 – Challenging Word Problems #3
07:24 – Challenging Word Problems #4
09:28 – Challenging Word Problems #5
13:29 – Challenging Word Problems #6
15:55 – Challenging Word Problems #7
17:43 – Challenging Word Problems #8
19:25 – Challenging Word Problems #9
22:58 – Challenging Word Problems #10
25:50 – Challenging Word Problems #11
27:20 – Challenging Word Problems #12