Idea for teaching algebra : Finding X

X is a spy and you (the Ss) have to identify him/her. Your spy gadgets include +,-,*, and / (and others when they become necessary). Use your gadgets to unmask X!

So it's late and I'm quite tired. But I think this link will take you to my site where the movie is available for viewing.
http://sites.google.com/site/myjourneytobetterteaching/curriculum/movie-challenge

This is where it starts...

I wish I had thought about doing this earlier. There are so many things that I have learned and experimented with in teaching that I wished I had a better place for than one of my many notebooks or to get lost in my file-eating boxes.
More to come...