By Helen Drury
By Navtej Marwaha
By Kevin Evans
By Catherine Berry, Sophie Goldie, Brandon Wilshaw, Leonie Turner, Margaret Bland
By Orrell, Sue, Elston, Carol
By Ann Montague-Smith
By Bird, John O., May, A. J. C.
By Jan Dangerfield, Rose Jewell, Sue Pope, Nick Geere
By John D. Collins, etc.
By Colin Nye
By Clarke, Peter, Rossiter, Christina
By CGP Books
By School Mathematics Project
By Brian Nash, Paul Nightingale, Jan Wade
By Sue Chandler, Linda Bostock, Ewart Smith, Ian Bettison
By Mr David Alcorn, Mr Tony Banks
By Broadbent, Paul, Kearsley Bullen, Rob
By David Rayner, Michael White
By Sue Chandler, Linda Bostock, Ewart Smith, Audrey Shepherd, Ian Bettison
By Appleton et al
By June Haighton, Anne Haworth, Steve Lomax, Andrew Manning, Kathryn Scott
By Scottish Mathematics Group
By Catherine Casey, Graham Fletcher, Lesley Fletcher
By Steve Mills, Hilary Koll, Jepson Ledgard
By Richard Dawson
By CGP Books, CGP Books