Professional vision helps the teacher decide where to focus attention and what interactions are most critical at the moment. Despite the importance of teachers' professional vision, the authors find that teachers do not always have opportunities to reflect on and further develop their professional vision. During instruction, a student's comment or…

Examined how video clubs (ongoing discussions of videotaped classroom instruction) supported the development of productive conversations among teachers and educational researchers. Analysis of six video clubs involving high school mathematics teachers and a university researcher illustrated the complementary character of expertise the participants…