Students will have experiences with two coordinate graphs during the unit. We will graph the results of the activities when appropriate. Teacher Knowledge Inclined planes make work easier by increasing the distance over which force is exerted. Helpful Hints 1. Students must hold the spring scale parallel to the inclined plane to get an accurate reading.
Procedure Divide the students into groups of four.
Give each group a brick and ask students to stack five or six books on their work area. Allow time for student responses. Give each group a spring scale and some string. Demonstrate how to tie the brick with the string and how to use the spring scale. Tell students to measure and record the distance traveled by the brick and the amount of force needed to lift the brick.