Animal Defenses Author:Jean C. Echols This highly visual and exciting unit introduces key life science concepts. Children are invited to add protective structures to help their "defenseless animal" cope with the predatory world. With a Tyrannosaurus rex as a predator, the first class session introduces structures animals have to defend themselves, exemplified in classroom dramas and... more » illustrated encounters. The next session focuses on defensive behaviors, drawing on familiar animals like cats, dogs, and reptiles. Enthusiastic role-play brings these and other defensive behaviors to life. This unit is an excellent way to introduce the biological concept of predator/prey and help young students understand the distinction between defensive structures and defensive behaviors.« less