By School Mathematics Project
By Catherine Baker, Angeles Peinador, Collins Big Cat
By Disney, Jane Riordan
By Neil Ardley
By Goodman, Susan, Hammer, Sandy
By Gordon Elliott, K. Martin
By Andrew Parker, Jane Stamford
By Chapman, Carol, Sheehan, Moira
By Chapman, Carol, Sheehan, Moira, Ms Carol
By McGraw-Hill
By Williams, Gareth
By DK
By Dr Tracey Greenwood, Lissa Bainbridge-Smith, Kent Pryor, Richard Allan
By Tracey Greenwood, Lissa Bainbridge-Smith, Kent Pryor, Richard Allan
By Wilbraham, Antony C.
By Williamson Campbell
By Anna Nilsen, Anni Axworthy
By Curry, Jennifer
By Kerr, Judith
By Garrington, Sally
By Schanz, Sonja, Donaldson, Gerry
By Whybrow
By Michael Stone, Zenobia Barlow