Recent years have seen an increase in the use of video for teacher education and professional development accompanied by widespread recognition that to be beneficial, video must be used in activities that induce particular modes of inquiry. However, little is known about how teachers typically watch video. The present study investigates the use of…

This study examines changes in teachers' thinking as they participated in a video club designed to help them learn to notice and interpret students' mathematical thinking. First, we investigate changes in teachers' talk about classroom video segments before and after participation in the video club. Second, we identify three paths along which…

This study investigates mathematics teacher learning in a video-based professional development environment called "video clubs." In particular, the authors explore whether teachers develop professional vision, the ability to notice and interpret significant features of classroom interactions, as they participate in a video club. Analysis for the…