Vincent Brannigan, Judy Brown. Bottle top maths: a primary school interactive multiplication maths resource. In Elizabeth A. Kemp, Chris Phillips, Kinshuk, John Yanes, editors, Proceedings of the Symposium on Computer Human Interaction, CHINZ 2001, Palmerston North, New Zealand, 6 July 2001. pages 9-14, ACM, 2001. [doi]
Abstract is missing.