Extension

Simple Machines and the Digestive System

Research and come up with a list of machines that function like the teeth
and stomach.
Look back at the function of the teeth and stomach to help you get
started.
Now come up with your own list of machines that act like the parts of the
digestive system. Find pictures of these machines or make colored
drawings of them.
For each example of a machine, tell how it could be an analogy for these
body parts.