John Harrison will be giving a talk about Numdrum at the Mathematical Association's annual conference at the University College of St Martin, Lancaster, April 8-11.
Single Numdrums pound;2, with Teachers' Notes pound;2.50. Classroom sets (30 Numdrums in large storageteahing drum) pound;69. Post and packing included. Available from J T Harrison, Unit 6, Woodgates Farm, Broxted CM6 2BN. Telfax: 01279 850566.
Websites: www.uk-schools.net www.numtrom.com (in dutch) E-mail: harrison_uk_2000 @yahoo.co.uk Mobile: 07836 242932