The Cubelets Clever Constructors Pack is Modular Robotics' best-selling classroom configuration of Cubelets — magnetic robot blocks that snap together to build working robots with no screen, no wiring, and no syntax to memorize. Every Cubelet belongs to one of three families: SENSE blocks (like Distance and Brightness) that read the environment, THINK blocks (like Inverse, Threshold, and Knob) that process that information, and ACT blocks (like Drive, Rotate, and Flashlight) that turn it into motion or light. Because the magnetic faces only connect one way, even four-year-olds can assemble a robot that drives, steers, and reacts in seconds.
This pack contains 78 Cubelets across 11 types, enough to support six working groups of three to five students at once — which is why it is the configuration most educators choose for a full class or a small makerspace. It ships with 12 brick adapters (compatible with LEGO and similar bricks), five Micro-USB charging cables, a five-port multi-battery charger, and a padded storage container for transport between rooms. Battery Cubelets run up to about six hours per charge. Every set also unlocks Modular Robotics' free standards-aligned lesson plans, printable activity cards, and online professional development.
As America's largest commercial robotics integrator, RobotLAB resells the Clever Constructors Pack to schools, libraries, and makerspaces and pairs it with deployment guidance, educator onboarding, and ongoing support. We help districts choose the right Cubelets configuration for their student count and budget, add grade-banded lesson bundles where needed, and stand behind the purchase after the box is opened.