If you need help turning JavaScript On, click here.
cmapthumbs Class 1 Lever.gif Class 2 Lever.gif Class 3 Lever.gif compound machines.jpg double class 1 - pliers.gif double class 2 - nutcracker.png double class 3 - tweezers.png fixed pulley.png inclined plane.jpg lever.jpg moveable pulley.png pulley.jpg screw.jpg Simple Machines.cmap single class 1 - teeter totter.jpg single class 2 - wheelbarrow.png single class 3 - broom.png Some Interesting Compound Machines - Rube Goldberg.url wedge.jpg wheel and axle.jpg