Smart board flash puzzle game learning the letter Uu. In this game all of the graphics are animated. This game can be used as either a smart board lesson or on an individual computer as a standalone game. The children move the puzzle pieces to the correct spot and they snap into place. When they finish, congratulations flashes across the screen. This game requires flash and a mac computer to play. Uu Puzzle by Melissa Yancy for mac by Melissa Yancy is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.