A compact, user-friendly reference book, investigating current trends in ELT. Trends are wide-ranging and include topics such as: plurilingualism, wellbeing, digital literacies, metacognition, flipped learning, gamification, mediation, and critical thinking, amongst others. The book considers how and why each trend has become important in ELT; explores how the trends are reflected in current practices; and evaluates the trends, looking at their relevance to different ELT contexts and their grounding in research.