* Introducing the Soroban - a Powerful Aid for Number by Kimie Markarian, Tandi Clausen-May and Sue Pope, pound;9.75 (pound;6.83 for members). Tel: 01332 346 599
* A set of 10 soroban (pound;110) and a class set of 30 (pound;270), together with an introductory booklet are available from the Association of Teachers of Mathematics (ATM).
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