Carnegie Mellon Robotics http://www.education.rec.ri.cmu.edu/
FIRE robotics academy with links http://www.education.rec.ri.cmu.edu/fire/robot-lessons/
Interactive bridges http://www.bridgebuilder-game.com/
Interactive bridges http://www.pbs.org/wgbh/buildingbig/
Physics labs http://higheredbcs.wiley.com/legacy/college/halliday/0471320005/simulations6e/index.htm?newwindow=true
Graphing programs http://nces.ed.gov/nceskids/createagraph/
Sound effects http://www.mediacollege.com/downloads/sound-effects/