This pack contains enough Polydron for a whole class. It comes with an excellent set of teachers’ notes that will help the children explore the world of basic geometry, shape & space. Contains 184 pieces including 40 squares, 100 equilateral triangles, 24 pentagons, 20 hexagons and an exploring booklet. Supplied in 4 colours. The original and still superior construction shape. Recognised in many countries as the world's leading resource for teaching shape and space, 2D and 3D geometry, and design and technology. The unique joints readily snap together giving a superior hinge. Square pieces measure 7.3 x 7.3cm (2.88 x 2.88 inches). Compatible with Crystal Polydron, Polydron Frameworks, Polydron Bridges and Polydron Engineer. Click here to check out the exploring polydron booklet Dimensions: L x W x H (cm): 43 x 31 x 7Ages: 4+