In one of my math stations, I have each group of students put together a giant floor puzzle. But what do you do when a particularly bright group puts the puzzle together in record time, and you still have a few more minutes left on the clock?
The kids came up with their own solution! They took the puzzle apart, turned it upside-down so they couldn't see the colorful side, mixed up the pieces, then attempted to put it back together!
Talk about challenging! But they loved it!