In "Better or Worse," Charlie uses cellular automata to visualize a repeated message that is being changed each time it is sent. He is looking for patterns so that he can determine what the next coded message will look like.
Before the Activity
Download the attached PDF and look over the Teacher Page.
During the Activity
Discuss the materials from the Student Page with your class.
After the Activity
Encourage students to explore web sites and questions from the Extensions page.