Outline:

1. Nested for loops
   • tracing a nested loop
   • Exercise 1
2. Recap Lesson 12: RGB colors and Image objects
   • lesson 12 classwork, question #2
3. Image processing
   • getting a pixel’s color with image.getPixel
   • creating a grayscale image: Exercise 4

Explore after class:

4. More image processing exercises
   • creating a random image with image.setPixel: Exercise 2
   • getting a pixel’s color with image.getPixel: Exercise 3
5. Mixing for and while
   • Exercise 5

Want more practice?

6. Runestone:
   • nested for loops
   • using print statements for debugging
   • different types of for loops

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

• Zelle sections 4.8.4-4.8.5 (pp. 120-121)