Dado Cubes: Dado combines art and science as your child explore architectural principles including proportion, balance structure and color. A new twist on classic building blocks. Dado engages your child’s imagination as the slits on each cube are interlocked to create an unlimited number of three-dimensional structures. Constructed horizontally, vertically or nested together, Dado invites visual spatial development and problem solving through design-centered, attention-grabbing fun! Loaded with educational benefit. Each set features 10 cubes, scaled from 1 inch to 5 inches, capable of building structures over 32 inches high! Durable, heavy gauge plastic construction. Developed, manufactured, and assembled in the U.S.A.!