There was one more tech integration on the Cheese Cracker Square Root Showdown.
Students in the iPad class were prompted to explain (via picture) the lesson to the next class.
They took a picture, edited in Skitch, then uploaded to the class DropBox folder. Some of them are pretty sweet.
Photo upload tip:
Have students put their name on the photo somewhere. They are very sad if they have to re-do the whole thing.