00:10 – Intensive Practice #1
00:57 – Intensive Practice #2
01:31 – Intensive Practice #3
02:34 – Intensive Practice #4
03:10 – Intensive Practice #5
04:21 – Intensive Practice #6
05:43 – Intensive Practice #7
At 6:44 in this recording, I said 872 and wrote 862. The number I wrote (862) is correct.
06:49 – Intensive Practice #8
08:02 – Intensive Practice #9
09:56 – Intensive Practice #10
11:07 – Challenging Problems #1
13:49 – Challenging Problems #2
14:56 – Challenging Problems #3