lesson 10.4a and b.gwb - 1/12 - Fri Oct 21 2011 11:30:21

lesson 10.4a and b.gwb - 2/12 - Fri Oct 21 2011 11:31:41

lesson 10.4a and b.gwb - 3/12 - Fri Oct 21 2011 11:34:19

lesson 10.4a and b.gwb - 4/12 - Fri Oct 21 2011 11:34:47

lesson 10.4a and b.gwb - 5/12 - Fri Oct 21 2011 11:42:18

lesson 10.4a and b.gwb - 6/12 - Fri Oct 21 2011 11:43:11

lesson 10.4a and b.gwb - 7/12 - Fri Oct 21 2011 11:56:33

lesson 10.4a and b.gwb - 8/12 - Fri Oct 21 2011 11:57:24

lesson 10.4a and b.gwb - 9/12 - Fri Oct 21 2011 11:59:07

lesson 10.4a and b.gwb - 10/12 - Fri Oct 21 2011 12:01:00

lesson 10.4a and b.gwb - 11/12 - Fri Oct 21 2011 12:11:14

lesson 10.4a and b.gwb - 12/12 - Fri Oct 21 2011 12:26:41