Chval will present data from her National Science Foundation Career award, A Study of Strategies and Social Processes that Facilitate the Participation of Latino English Language Learners in Elementary Mathematics Classroom Communities. In this intervention study, Dr. Chval works with third grade teachers to enhance their curriculum materials, instruction, and assessment practices to facilitate the participation of Latinos. Elementary students then film their mathematics classrooms using head-mounted video cameras. The teachers watch video segments with Dr. Chval on a weekly basis to reflect and identify future instructional enhancements. The Student Cams serve as research tools, but also professional development tools that challenge teachers to examine their practice through a unique perspective.