EdheadsActivate Your Mind
MI KidsSimple Machines
DirtmeisterSimple Machines
Harder
Science Files
BrainPopSimple Machines
What Simple Machine Is It?
Franklin InstituteSimple Machines
Machines Make Life Easier
Simple Machines Learning Site
Thinkquest
Explore Create Learn
The Doorknob
Simple MACHINES
Simple Machines Made Easy
Extra Fun!
Bird Tools
NEW! Simple Machines Simulation Game with Robots
The Wheel and Axle in Use
How Can We Move Our Principal?