Simple Machines Kit Teaches about Mechanics

This clever kit includes everything you need to make simple machines: a variable lever, a wheel and axle, an inclined plane, a pulley and a wedge.

The kit includes a worksheet with diagrams and exercises to accompany hands-on building activities. There's also a 38 minute video, which explains how to construct and use the machines, and how to calculate the mechanical advantage of each machine.

I think I need to get this!

Here's the link to the Simple Machines Kit.