This bumper pack of 184 pieces in red, yellow, blue, green and clear is designed to be used by a whole classroom. It contains 4 key shapes (pentagons, hexagons, squares and equilateral triangles) which allow you to make all types of 2D and 3D shapes such as cubes, tetrahedrons and dodecahedrons. The pieces have been designed to work on a light table or against a light source. Children will see inside solid structures and begin to understand the shape and space within. The clear pieces are ideal for colour construct within models. Pieces are made from super tough and durable engineering grade polycarbonate. Each square piece measures 7.5 x 7.5cm. The set contains 20 hexagons, 40 squares, 100 equilateral triangles, 24 pentagons and an exploring booklet.