Before Class

• Read Python Turtle Graphics from the section entitled Iteration Simplifies our Turtle Program through the section entitled The range Function.

Class Activity

• Draw a square spiral using Turtle Graphics.

Active Learning Activity

• Work Exercise 10.

Useful Information

• Here is a partial list of supported color names
• You can set the background color of a window, using something like window.bgcolor("color-name")
• You can let the user exit a window with the command window.exitonclick()
• The range function comes in three varieties: range(stop) and range(start, stop) and range(start, stop, step)
• Here is the complete turtle module documentation.