Drawing on recent socio-cultural approaches to research on language learning and an extensive corpus of classroom video recording made over four years, the book documents language learning as an epiphenomenon of peer face-to-face interaction. Advanced technology for recording classroom interaction (6 cameras per classroom) allows the research to move the focus for analysis off the teacher and onto learners as they engage in dyadic interaction. The research uses methods from conversation analysis with longitudinal data to document practices for interaction between learners and how those...