In this activity, students formulate and evaluate a hypothesis about the amount of time necessary for natural selection by predation.
Have students complete the entire “Student Handout.” Use the suggestions in the “Educator Materials” to implement other parts of this activity, such as the video clip, with the following adjustments:
- Show the video from 0:00–1:34 between Part I and Part II of the activity.
- Show the remainder of the video (1:35–end) after Part IV, question 11.
Estimated Time: One to two 50-minute class periods.