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Student presentations offer important opportunities for teachers to make public and build on students’ emerging mathematical ideas (Stein et al. 2008), and to help students recognize the valuable contributions of low-status peers (Cohen & Lotan 1995; 1999). To understand how meanings of competent participation are negotiated in student presentations, we use tools developed by Gresalfi and colleagues (2009) to attend to how agency and accountability are distributed in the classroom. We examine three cases of lesson enactments, highlighting contrasts between opportunities for conceptual agency and disciplinary agency (from Gresalfi et al. 2009) and a third type of agency which we term expository agency. One case reinforced status differences between students while the other two supported an inclusive definition of competent participation.
Kimberly Seashore, University of California - Berkeley
Alyssa Sayavedra, University of California - Berkeley
Lawrence Teng, University of California - Berkeley
Sarah R. Firestone, University of California - Berkeley