By School Mathematics Project
By McNab, Rosi
By Bullen, Rob Kearsley
By Unknown
By Rees, Rosemary
By Ridgwell, Jenny, Davies, Ms Louise
By Grundy, Valerie, Rollin, Nicholas
By Elston, Tony, McLagan, Patricia
By Elston, Tony, McLagan, Patricia, Swarbrick, Ann
By Smith, Ken, McGuire, Peter
By Gardom-Hulme, Philippa, Large, Pam, Mitchell, Sandra, Sherry, Chris
By Prescott, Chris
By Pople, Stephen, Denley, Paul
By Harvey, Damian, etc., Paul, Korky, Damian Harvey
By Morgan, Michaela, Horne, Sarah