By Charles Dickens, Clive Bryant, David Roach, Terry Wiley, Sean Michael Wilson, Karen Wenborn, James Offredi, Jenny Placentino, Jo Wheeler, Mike Collins
By Corden, .
By Thomas, Gary
By PC Pro, Kevin Partner
By Ellen Notbohm
By Notbohm, Ellen
By Altricher, Herbert, Feldman, Allan, Posch, Peter, Somekh, Bridget
By Glenys Jones
By David Waugh
By Bernd Bruegge, Allen Dutoit
By david-waugh, David Waugh
By Wiegand, Patrick
By David Smart
By Scottish Secondary Mathematics Group, .
By Howat, Robin, Meikle, Graham, Mullan, Edward, Murray, Ruth, Nisbet, Ken, Brown, Harvey Douglas, Mullan, Edward
By Ian Cassells, Mary Kay
By Brown, Harvey Douglas, Howat, Robin, Meikle, Graham, Mullan, Edward, Nisbet, Ken, Brown, Martin, Mullan, Edward
By Goodman, Sam, Sam Goodman
By Philip Barratt
By Gilbert, Mike
By Hanrahan, Val
By School Mathematics Project
By John Guillebaud (University College London, UK)
By Thomas Hardy, Hardy, Thomas, Seymour, Claire, Carabine, Dr Keith
By Francoise van Dorp, Chantal Simon
By Guinness, Paul, Nagle, Garrett
By Gary Cambers, Steve Sibley, Cambers, Gary, Sibley, Steve
By Ross, Simon, Simon Ross
By Pallister, Mr John, Bowen, Ms Ann