Simple+Machines

http://www.msichicago.org/play/simplemachines/
 * http://www.learninggamesforkids.com/simple-machines-games/label-it.html

[]- How do we move the Principal?

Simple machines make work easier for us by allowing us to push or pull over increased distances. http://www.mikids.com/Smachines.htm http://sunshine.chpc.utah.edu/javalabs/java12/machine/index.htm
 * Photos of simple machines
 * Simple and Complex Machines

http://interactivesites.weebly.com/physics-and-motion.html