http://www.vrml.k12.la.us/4th/Homework/science/4th_scienceun3.htm  Do the links on the left side
http://www.classzone.com/books/ml_science_share/vis_sim/emm05_pg77_electromag/emm05_pg77_electromag.html
http://www.engineeringinteract.org/interact.htm  Engineering Interactive
http://www.energyhog.org/childrens.htm
http://www.energyquest.ca.gov/
http://www.learner.org/interactives/parkphysics/coaster/
http://classroom.jc-schools.net/sci-units/energy.htm#Interactive_ Click on Interactive sites for kids
http://www.learn-energy.net/kidscorner/en/o11/games.html