Middle schoolers will have completed a unit of forces and motion prior to the current unit of study on simple machines (lever, inclined plane, screw, wedge, pulley, wheel and axle). Students will review the functions and examples of...

Simple machines are devices with few or no moving parts that make work easier. Students are introduced to the six types of simple machines - the wedge, wheel and axle, lever, inclined plane, screw, and pulley - in the context of the...

Good combination of teacher demonstration and student interaction for this simple machine lesson. Great for talking about force and work. Plans are for grades 2-4, yet are adaptable.