'Beginning and established teachers of mathematics as well as teacher educators will all find this book a rich resource when focusing on the crucial issue of designing and using tasks to provoke real learning in mathematics. It has become a central feature of our PGCE course in mathematics'. David Wright, Tutor in mathematics education, University of Newcastle Mathematics seems, on the face of it, a cut and dried subject. But does being able to 'do' mathematics mean being competent at techniques? Understanding how ideas and techniques fit together? Using basic principles in problem-solving?...