By Kirkby, Dave, Roper, Chris
By Duncan, Aileen
By K. M. Vickers, M. J. Tipler, Vickers, K. M., Tipler, M. J.
By Pimentel, Ric, Wall, Terry
By McArdle, Sean
By Chris Pearce, Pearce, Chris
By Dobbs, Steve, Miller, Jane
By Richards, Richard
By Linsky, Jean, Western, Brian, Rayner, David
By Porkess, Roger, Goldie, Sophie
By Moynihan, Dan, Titley, Brian
By Graham Lawler MA
By Speed, Brian, Ball, Helen, Bird, David
By Plass, Clare
By Holt Rinehart and Winston
By Christon, R., Newton, Paul
By Broadbent, Paul
By Koll, Hilary:Mills, Steve
By Hilary Koll, Steve Mills, Koll, Hilary, Mills, Steve
By Nolt, John, Rohatyn, Dennis A.
By Fraleigh, John B.
By SPMG, Scottish Primary Maths Group
By Hodgson, P. E.
By Edmondson, Andrew
By Cirrito, Fabio
By Andrew, Moira, Kindberg, Sally
By Fielding, David