AlphaMagnets and MathMagnets are shaped accurately with correct proportions, and are made with strong magnets for a 'sure stick.' Jumbo pieces are 2-1/2-inch tall for handling ease and tactile feedback for young children learning basic skills (42 red, blue, green, yellow, orange and magenta pieces). Includes math symbols. Comes in a durable, stackable tub with brightly colored plastic lid for convenient self-storage.  WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.