Presents a framework used in shaping two major mathematics teacher education research and development projects, built on a framework for mathematics learning derived from a social constructivist view of learning and incorporating aspects of French didactical theory. Describes interconnections between different domains of teacher knowledge.…

Examples from related case studies illustrate possible consequences of a social constructivist approach to learning and teaching mathematics. Discusses student tasks that promote flexibility in mathematizing subject matter; constructive versus Euclidean geometry approaches; working with real-life mathematics problems; and product versus process…