Simple Machines

Simple Machines
Status: In Stock
Product ID: 73655
Cost: $6.99

4 - 8 years. Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Paperback. 40 pages.