Students explore and measure the rate of spherical objects rolling down a ramp. They discuss why different ramps work better than others, and practice procedures for testing designs and recording results.

Teach young engineers that all machines, no matter how complicated or complex, are made up of just six simple devices with this hands-on physical science lesson. Using the included templates, students first create paper models of...

Second graders analyze the composition of different balls. In this science lesson, 2nd graders create their own balls using materials provided by teacher. They demonstrate what their invention can do.