Cubelets Brilliant Builder Kit is the perfect tool to deeply investigate robotics. Cubelets are a groundbreaking robot construction system designed for budding innovators ages four and up. Cubelets were designed to teach the big lessons behind complex systems, design thinking, and emergence with tiny robots. Cubelets Twenty comes complete with everything inventors, young and old, need to build thousands and thousands of interactive robots. Instead of programming your robot's behavior, you snap the Cubelets together and watch the behavior emerge like with a flock of birds or a swarm of bees. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.