Outline:

1. Quiz 2
2. Color models
   • how humans see color
   • converting an image to grayscale: Review Lesson 11
   • how computers output color
3. Conditional loops
   • while loops
   • example: max of n

Explore after class:

4. Additive versus subtractive color
5. More practice with while loops: Exercises 1-3

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

• Zelle sections 8.3-8.7 (pp. 247-276)