(topic: 2- & 3-D Geometry) - Pursued by Hacker, Digit lands on cybersite Eureeka, where his mission is to find Professor Archimedes - the maker of the encryptor chip, a unique computer chip that can fix Motherboard. But Archimedes is nowhere to be found - only a pile of two-dimensional rods where his chip factory should be. The kids arrive to help, and discover that by linking the two-dimensional rods together into certain geometrical patterns they actually create a surprising three-dimensional shape that leads directly to unraveling the mystery of Archimedes' strange disappearance. The Big Idea: When you follow simple rules to make flat geometrical shapes (two- dimensional), and join them together, you can discover new shapes that, instead of staying flat, rise up to make three-dimensional objects.