The Lever Family

Seventeen pages of material leave you well-prepared to carry out this lesson on levers and pulleys. Photos and diagrams make the instructions clear; resource links provide additional information. The missing aspects of this teacher's...

This site details how simple machines create a mechanical advantage for humans. Levers, theoretical mechanical advantage, actual mechanical advantage, and pulley systems are discussed.

Introduce your class to to the remaining three simple machines-- the lever, pulley, and the wheel-and-axle with a plan that includes the three different types of levers in the discussion of levers. The instructional activity...

Explains what a lever is, its history, how it works, the formula for calculating its mechanical advantage, classes of levers, and uses of levers.

Show your students how to make their work easier. The first lesson in a series of 10 introduces the class to work and the way simple machines can be make work easier. The simple machines scholars can find in everyday items are...

It is plane to see that simple machines help reduce the force needed to perform a task.  This resource introduces three of the simple machines--the inclined plane, the wedge, and the screw, and  the formulas in order to be able...

Investigate the mechanical advantage of the lever in this interactive activity from the NOVA Web site.

More on mechanical advantage, levers and moments.

Explains the relationship between force and mechanical advantage with diagrams, examples and calculations.

More on mechanical advantage, levers and moments. [6:50]