By Joe Santaniello
By Snape, George, Hall, Marguerite, Heslop, Nigel, Williams, James, Brodie, David
By Fennell, Anne
By School Mathematics Project
By Robert Lomax
By Holly Bathie, Magda Brol
By Schofield & Sims, Anne Forster, Paul Martin, Ann Montague-Smith
By Schofield & Sims, J W Adams, R P Beaumont, E Spavin, L Spavin, T R Goddard
By John A. Deft
By CGP Books
By Terry, Linda, Speed, Brian
By Norman Lock
By Peter Clarke
By Carol Vorderman, Linda Martin
By Rhona Whiteford, Jim Fitzsimmons
By Ian Gardner
By ncpta-staff
By Richard Dawson
By Rowland Morgan
By Heather Scott, Richard Bennett
By Ken Adams