Outline:

0. Questions?
1. Recap Lesson 2: Python expressions
   • value versus side effect
   • Exercise 1
2. Repetition via for loops
   • definite loops using for: Exercise 4 from Lesson 2
   • working with range(): Exercise 2
   • accumulator pattern (practice with for loops!)
3. Data visualization
   • plotting earthquakes: code and background image
4. A taste of object-oriented programming
   • graphics.py: code and documentation

Explore after class:

5. More practice with loops:
   • work on Exercises 2b and 2c if you haven’t already
   • more accumulator patterns: Exercises 3+4
6. The math library
7. More practice with graphics.py: Exercise 5

What’s next

Upcoming assessments:

• Homework assignment 2 is now released, and due next Thursday (with a short assessment due Monday at 10pm)
• Quiz 1 will be next Friday (they are every even-week Friday)

What you should do now:

• The readings (see below)
• Submit Assignment 1 by 3pm today if you’re using a token
• Read the description of Assignment 2 and complete Part 0 this weekend

Reading assignment (to be completed by the next class):

• Zelle chapter 3 (pp. 59–79)
• Zelle sections 4.1–4.3 (pp. 87–94)
• Assignment #2 (due next Thursday at 10pm, with a short assessment due Monday at 10pm)