This updated set features 817 elements that enable you to build and program MINDSTORMS® robots with even more functions than ever before. Includes plenty of special elements such as belts, unique connectors, a worm gear, and structural elements, as well as other LEGO® elements such as beams, axles, and connectors. It is the ideal supplement to your LEGO MINDSTORMS Education Base Set for classroom, after-school, or robotic competition use! Download free building instructions and programming examples for several great robots on LEGOeducation.us.