Third graders understand what a pulley is and how it works. For this simple machines, pulley lesson students experiment with broom sticks creating a pulley. Students observe how the pulley moves in its different trials.

Students, working in expert groups, study a form of energy. They plan a slide show presentation using pictures, clip art, and student taken digital pictures that show the energy type they have become experts in. They use a planning sheet...

[Free Registration/Login Required] Simple machines are all around and make many of the jobs we do easier. Investigate the six simple machines and how they help you work. Discover how they reduce the amount of force we use or can change...