Simple Machines Made Simple

This book allows you to present scientific principles and simple mechanics through hands-on cooperative learning activities. Using inexpensive materials (e.g. tape paper clips) students build simple machines-such as levers pulleys spring scales gears wheels and axles windmills and wedges-that demonstrate how things work. Activities have easy-to-locate materials lists time requirements and step-by-step directions (usually illustrated) on presentation. Ideas for bulletin boards learning centers and computer-assisted instruction are an added bonus.