By Ruth Merttens, Ba, Med, Dave Kirkby
By Tony and Liz Fleet, Tony Fleet, Liz Fleet
By Scottish Primary Mathematics Group
By Joe Santaniello
By Snape, George, Hall, Marguerite, Heslop, Nigel, Williams, James, Brodie, David
By Fennell, Anne
By CGP Books
By School Mathematics Project
By Robert Lomax
By Schofield & Sims, Anne Forster, Paul Martin, Ann Montague-Smith
By Hilary Schofield & Sims, Koll, Mills, Oxford Designers & Illustrators Ltd
By John A. Deft
By Terry, Linda, Speed, Brian
By Norman Lock
By Peter Clarke
By Carol Vorderman, Linda Martin
By Ian Gardner
By Richard Dawson
By Rowland Morgan
By Heather Scott, Richard Bennett
By Hanna Vappula
By Rowena Onions, etc., Jayne de Courcy, et al