By Gardner, Howard
By Lemov, Doug, Atkins, Norman
By du Boulay, Doreen
By Aukerman, Robert C.
By Bloom, Lois, Lahey, Margaret
By Entwistle, N
By Kirkup, Les
By Banks, James A., McGee Banks, Cherry A.
By Sleeter, Christine E., Grant, Carl A.
By Book Builders, Chin, Beverly
By Reid, Gavin, Wearmouth, Janice
By Alan E. Bramson
By Stones, E
By Wood, David, Wood, Heather, Griffiths, Amanda, Howarth, Ian
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By McPhillimy, McPhillimy
By Griffiths
By Secada, Walter G., Fennema, Elizabeth, Adajian, Lisa Byrd
By SMP
By School Mathematics Project
By Sinclair, Barbara
By Hertz-Lazarowitz, Rachel, Miller, Norman
By Glendinning, Eric H., Holmstrvm, Beverly
By Ur, Penny
By Chapman, Jenny L., Reiss, Michael
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