reading for unit 11

I've made a few adjustments from the original posting and pushed back a few dates:

B block:
p. 523-532 for Friday 1/24
p. 532-539 for Tuesday 1/28
p. 539-548 due Wednesday 1/29
p. 548-556 due Thursday 1/30

G block:
p. 523-532 for Thursday 1/23
p. 532-539 for Monday 1/27
p. 539-548 due Tuesday 1/28
p. 548-556 due Thursday 1/30