There is a video called "All Because of Model Airplanes" produced and directed by Bob Benjamin. You can visit his website at www.rcmodel.com and there is contact information there on how to get one. It is very useful in conducting school demonstrations. We have done it a couple of times. The video is 25 minutes long. Another thing you can do is go to your local hobby store and purchase those balsa wind-up rubberband airplanes and hand them out to the students. You can do duration contest. Just take a few models with you, bring a radio and show them how everything works. Electric airplanes work fine. Fun fly airplanes don't take a lot of room to fly either.

Good luck and have lots of fun.