self-review questions (pages 51-52)
1.3, 1.4, 1.5, 1.7, 1.8, 1.9, 1.13, 1.14, 1.15, 1.16, 1.17

exercises (pages 52-55)
1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.16, 1.17, 1.18, 1.20

programming projects (pages 55-56)
1.1, 1.2