By Schofield & Sims, Steve Mills, Hilary Koll
By Keen Kite Books
By Hodge, Paul
By Letts KS1
By Collins Easy Learning
By Math Blue Publishing
By Gareth Moore, Chris Dickason
By David Glover (Rutgers University), Tim Hutchinson (Larkmead Veterinary Group, UK)
By School Mathematics Project
By Hilary Schofield & Sims, Koll, Mills, Oxford Designers & Illustrators Ltd
By Richard Cooper
By Clarke, Peter
By Kumon Publishing, Kumon
By Soper, Sandra
By Richard Cooper, Cooper, Richard, Burville-Riley, Mark
By Murphy, Stuart J., O'Malley, Kevin
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By Dickinson, Paul, Hough, Susan, Eade, Frank, Gough, Steve, Dudzic, Stella
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By Prim-ed Publishing, Prim-ed Publishing