A special edition large class pack. Ideal for a class of 20 children upwards. A comprehensive set complete with teacher’s notes and examples. Great to help the understanding and explanation of basic geometry and shape and space. Geometric Construction System, designed to promote creative and educational development. The brightly coloured pieces made from tough ABS plastic simply snap together allowing them to hinge through 260 Degrees, and are highly flexible. POLYDRON is a favourite with teachers of the National Curriculum because of its wide range of applications.