Extensor Construction Kit

Maths Gear Verified independent store

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Extensor pieces use a scissor-like mechanism to extend and contract, and can be connected together to build shapes and structures which can then themselves expand and contract in c ool ways. This starter set contains 40 plastic parts (including X and Y pieces for making more interesting shapes), two springs and an instruction booklet. Ages 13 and up. Price = (the 367th prime number) pence = 2477 pence = £24.77 Show more