By Stephen Colbourn
By Shipton, Paul
By Jones, Diana
By Gabriel Diaz-Maggioli, Lesley Painter-Farrell
By Ormerod, Mark, Mohamed, Emma
By Mary Bowen, Printha Ellis, Wendy Wren
By Hollands, Roy Derrick, Moses, Howell G.
By Reader's Digest
By Reader's Digest Association
By Tames, Richard
By NO AUTHOR
By Farman, John
By Blume, Judy
By Aylett, John
By Hackman, Sue
By Robert Muchamore
By Pearson Education Ltd.
By SPMG, Scottish Primary Maths Group
By P Corbett & C Buckto
By McNab, Rosi
By School Mathematics Project
By Cholij, Mark, Mark Cholij
By Christopher Paolini, Paolini, Christopher