(topic: Symmetry) - In his passion for symmetry, Dr. Marbles has created Symmetria, a harmonious cyberplace where everything is made symmetrical by a symmetrizer. Hacker steals the machine and reprograms it so that he can undo symmetry. The kids must master the properties of symmetry before Hacker destroys beauty, balance and harmony throughout all of cyberspace! The Big Idea: Symmetries are patterns you can find hidden within many objects that create balance, order, and a pleasing regularity in the world around us.