By School Mathematics Project
By Hunt, Barrie, Steinhardt, P. J.
By Watson, Anne, Houssart, Jenny, ROAF, Caroline
By Clay, Marie M.
By Ron Taylor, Adrian Oldknow
By Berry, Mary
By Letts GCSE
By Shakespeare, WILLIAM, Baldwin, Pat, Baldwin, Tom
By Webber, Beryl, Haigh, Jean
By Hanson, David E
By Harris, Colleen
By England, John, Oliver, Nuria Gonzalez
By Boote, Rene, Reason, Rea
By Watson, Christine, West, Heather
By Margulies, Jon
By Clarke, David
By Merchant, Guy, Thomas, Huw
By Craig, Claire
By Ramsey, Michelle
By Vorderman, Carol
By Brown, Richard, Ruttle, Kate, Glasberg, Jean
By Brown, Gillian, Ruttle, Kate
By Leigh, Peter
By Stevens, David