Crawford, Michael L (2001) TEACHING CONTEXTUALLY. CCI Publishing, Inc, Waco, Texas. ISBN 1-57837-321-2

Gardner, Martin (2001) THE COLOSSAL BOOK OF MATHEMATICS. W.W.Norton & Company, New York, London. ISBN 0-392-02023-1

Harmer, Jeremy (2001) HOW TO TEACH ENGLISH. Longman, England. ISBN 0852297966

Kilpatrick, Jeremy and Swafford, Jane and Findell, Bradford (2001) ADDING IT UP HELPING CHILDREN LEARN MATHEMATICS. National Academy Press, Washington, DC. ISBN 0-309-06995-5