The authors investigate how conversational routines, or the practices by which groups structure work-related talk, function in teacher professional communities to forge, sustain, and support learning and improvement. Audiotaped and videotaped records of teachers' work group interactions, supplemented by interviews and material artifacts, were…

In this article, the author examines the character of the conversations generated in an elementary teacher group as they worked on mathematical problems together and analyzed their students' work. Two distinct forms of talk--"exploratory" and "expository"--were found. The first type of talk occurred most prominently when discussions centered on…