Here is a science magic object lesson I did this past Sunday. It was a last minute thing, my Pastor asked me to do something new in the service. I the past I've done magic, chalk art, ventriloquism, so this year I went with science. It's a bit clumsy do to no practice time. Any way it may inspire you so here it is. http://youtu.be/4gNYxi2CFmM

Finally took the time to watch your link.
Nice.

As I recall Bev told me we are going to have a science workshop at our regional FCM training conference.
Your video got my interest peaked. Merriam Ks in August.

Harris
Still too old to know it all