Creating an AR demo for elementary school kids

I'm part of the dad's club at my kids elementary school, and as a group we put on a discovery day to cover topics that generally have to do with science and technology, and usually involve the physics of a big piece of fruit being dropped from the school roof.

I decided to put on a demo of augmented reality, and wrote a few apps that ran on a few iPads that Apple loaned to us. For more info about it, check out the web site