Time to move on to section 9.1.2
Time to move to section 9.2
Time to move to 9.2.2
Time for section 9.2.3
Time for section 9.3
Time for 9.3.2
Time for 9.3.3
Time for 9.4
Time for 9.4.2
Time for 9.5
Time to go to 10.1
Finish Ch. 9, exercise 9