In "Obsession," Agent Don Eppes is investigating a murder in a home that had security cameras installed in it. His brother Charlie helps him figure out where the cameras could see and, more importantly, where they couldn't. He does this by using a model of the home and then applying his knowledge of "The Art Gallery Problem." Depending on the shape of the home, a certain number of cameras are needed to guard the interior.
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 websites and questions from the Extensions page.