http://littleshop.physics.colostate.edu/
http://www.sciencenewsforkids.org/
http://www.wsu.edu/DrUniverse/
http://www.extremescience.com/
http://www.titlemax.com/resources/a-guide-to-simple-machines-used-in-cars/
http://www.discoveryeducation.com/
http://www.sciencefun.org/kidszone/
http://www.pbs.org/parents/education/science/games/