The last few decades have seen an increase in interest in classroom interaction, and this has coincided with the global spread of ELT. This book gathers together 11 empirical-based studies of classroom interaction carried out in different countries, including the USA, England, Kenya, Sweden, and China. Implementing methodologies including conversation analysis, corpus-based analysis and discourse analysis, and covering investigatory issues such as CLIL, multilingualism and computer-assisted language learning, each chapter provides cutting-edge accounts of classroom issues and challenges. Along with a state-of-the-art literature review, the chapters provide key insights and engagement priorities that will prove relevant to a variety of learning and teaching contexts.