Learning and teaching for understanding : the key role of collaborative knowledge building / Gordon Wells -- Social constructivist teaching and the shaping of students' knowledge and thinking / Graham Nuthall -- A diversity of teaching and learning paths : teaching writing in situated activity / Carol Sue Englert and Kailonnie Dunsmore -- A highly interactive discourse structure / Alan H. Schoenfeld -- Methods, goals, beliefs, commitments, and manner in teaching : dialogue against a calculus backdrop / Daniel Chazan and Marty Schnepp -- Talking to understand science / Kathleen J. Roth -- Constructing ideas about history in the classroom : the influence of competing forces on pedagogical decision making / Bruce A. VanSledright and Jennifer Hauver James -- Westward expansion and the ten-year-old mind : teaching for historical understanding in a diverse classroom / Cynthia M. Okolo, Ralph P. Ferretti, and Charles D. MacArthur -- Discussion / Jere Brophy.