Sert (2015) builds on Seedhouse’s classroom contexts and Walsh’s notion of CIC to describe the ways epistemic, multimodal, and multilingual resources help us understand learning and teaching events in L2 classrooms. Using data that includes EFL classrooms in Luxembourg and Turkey, he examines the verbal and multimodal features of teacher–student interaction; including gaze, gestures, and orientations to classroom artefacts. It builds on the knowledge-base of L2 teachers’ interactive skills by showing that the ways (1) teachers respond to students’ use of first language(s), (2) manage interactional troubles, (3) visualise their actions through gestures, and (4) display awareness of unwillingness to participate have pedagogical and interactional consequences. Based on empirical findings, the book goes on to provide tips for teachers and extends these findings for investigating and enabling teacher development, which will be presented in the following sections.