By Edmondson, Andrew
By Morgan, Nina
By Metcalf, Paul, Courcy, Jayne de, Buzan, Tony
By Gordon, Keith, Evans, Kevin, Courcy, Jayne de
By Walpole, Brenda, Tinkler, Dennis, Fairclough, Chris
By Kirkby, David
By Burndred, Stafford, Seager, Brian
By Clarke, Peter
By Nicholson, J., Riley, C.
By Fidge, Louis, Prince, Sue
By David Sargent, Lynne Graham
By Bond, J. M.
By Marshall, J.
By Woodman, Anne, etc., Albany, E., Riding, Richard
By Marshall, John
By School Mathematics Project
By Scottish Primary Mathematics Group
By Clarke, Peter, Rossiter, Christina
By Anon
By Fillis, Brian, Wilmott, A.