By Oram, Hiawyn, Schon, Nick, Collins Big Cat, Moon, Cliff
By David Kirkby
By Colin Goldsmith, David Nelson, School Mathematics Project
By School Mathematics Project
By David Rayner
By Caroline Bucknall
By John Wood, Rosemary Emanuel, Janet Crawshaw
By Andrew Brodie
By Gill Potter, Cherri Moseley
By Karen Bryant-Mole, Zul Mukhida
By Hilary Koll, Steve Mills
By Gareth Cole, Tbc, Heather Davis, Sophie Goldie, Linda Liggett
By Paul Broadbent
By Murray Brennan
By L.J. Frobisher
By Unidentified Author, Kent County Council
By Scottish Primary Maths Group SPMG
By Margaret Gronow
By Various
By Serena Alexander, David Hillard
By CGP Books
By Ginn, Merttens, Ruth, Kirkby, David
By Diyan Leake
By Levesley, Mark
By Davidson, Avelyn
By Lessac Frane