Simple Machines covers these concepts: work is done when a force is used to move something over a distance some jobs take more work that other jobs machines make work easier machines may have few many, or no moving parts the lever is a simple machine the wheel and axle is a simple machine the pulley is a simple machine the inclined plane is a simple machine the screw is a simple machine the wedge is a simple machine. A variety of engaging activities present the concepts in ways that students can understand. Each concept presented includes: teacher directions for lessons reproducible resource pages such as sets of picture cards, minibooks, and lab sheets to record the results of hands-on investigations