This paper explores the social positions that students construct and the patterns of participation that different individuals and groups achieve within a classroom community of practice. Using a form of collective argumentation to promote student involvement in the practices of a disciplinary community of mathematicians, the study employed a…

Classroom talk is regarded as essential in engaging and developing student understandings in the domain of mathematics. The processes of classroom talk may occur in quite different ways, ways that shape particular opportunities for learning mathematics. Little is known about how the talk produced in innovative approaches to education mediates the…