Write the words population, species, and variation on the blackboard.
2. One member from each group will obtain a pea pod.
3. Have each group examine a pod to observe the variations in pea size.
When students open the pods, they will notice that the peas near the
center are larger. Why? Are the peas constricted? This can lead to
a discussion of heredity and environment.
4. Relate the terms species, population, and variation to the pea pods.