The purpose of the first activity is to stimulate students’ interest in the coloration of animals. While students may already be aware that the white coat of the polar bear provides some measure of concealment in the snowy surroundings of the Arctic, or that the green color of certain caterpillars may be helpful to them in their leafy habitat, they have probably not stopped to think that the coloration of many animals serves a useful function. Therefore, the primary purpose of this activity is to suggest that any question about animal coloration may have an answer, perhaps even an answer that students themselves can discover.