Here's something the Hawk Valley club did in New Jersey a couple of years
ago:

http://www.youtube.com/watch?v=21PAYdokVxY

This was at a grade school, where the principal was a glider student at
our field. He and a few others did a *lot* of preparation work, and the
kids got about a half day of exposure to basic flight physics, history of
flight, building balsa model gliders, and finally getting an up close
encounter with our club 1-26. I don't know if we made any lasting
impressions, but we gave it a good effort. And it was fun for us, too.

Jim Beckman