Amazon.com: Lego Mindstorms Education NXT Base Set (9797) - Robotic Platform : Toys & Games
LEGO MINDSTORMS NXT One-Kit Wonders: Ten Inventions to Spark Your Imagination: James Floyd Kelly, Matthias Paul Scholz, Christopher R. Smith, Martijn Boogaarts, Jonathan Daudelin, Eric D. Burdo, Laurens Valk, BlueTooth Kiwi, Fay