Great for budding builders this 164 piece starter set in red yellow blue green and clear contains 3 key shapes (squares equilateral triangles and pentagons) which allows children to construct their first 2D and 3D shapes with ease.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 40 squares 100 equilateral triangles 24 pentagons and an exploring booklet.