Leading a whole-class mathematics discussion is complex work. The teacher must attend to and respond to student thinking while continually keeping the mathematical goals of the discussion in mind. This work is especially challenging for novice teachers who are just learning to facilitate classroom talk. We present a new sortingtask instructional activity designed to support novice secondary teachers in steering a discussion toward a mathematical point while eliciting and making use of student thinking. We describe our efforts to support novice teachers through learning about, rehearsing, enacting, and reflecting on this sorting task. We document the impact of these supports for the novice teachers, and share ways that other teacher educators can take up this structure.
Erin E. Baldinger, University of Minnesota, STEM Educational Center, 1954 Buford Avenue, 320 LES, St. Paul, MN 55108; email@example.com