Purpose: To show how people working together can accomplish more than the same number of people working alone.

Materials: Two poles, one shorter than the other.

Lesson: If you wanted to move a large rock you could do so by using a smaller rock and a pole. You would place the smaller rock near the large one and then use the pole as a lever. (If you think the children are too young to understand this, show them a picture of a pole being used as a lever.) I have two poles here. (Show them to the children.) One is shorter than the other. Which pole do you think would give you the most force to move the rock? If you were to experiment you would find that the longer pole wo…