Includes 4 striking colours. These sets are ideal for teaching geometry, construction and polarity. Fantastic for building more complex shapes, these massive 104 piece sets contain 36 Squares, 36 Triangles, 12 Pentagons and 20 Hexagons. Larger groups of children can make several different 2D and 3D shapes at the same time. The pieces are compatible with existing Magnetic Polydron(R) sets and are made from super tough, engineering grade ABS. Building guides included. Age 3+.