This book fills a large gap in our understanding of how to prepare teachers for the challenging but increasingly popular task of teaching content and language simultaneously. It brings together findings on content-based teacher education from Africa, Asia, Australia, Europe and North America in order to inform researchers and teacher educators and enable them to play a critical role in the continued success of such programs. It offers a solid grounding in theories and applications of content-based approaches with empirical studies investigating teacher identity, materials design, use of cognitive discourse functions and best practices for teacher education. Responding to the growing popularity of content-based programs and the shortage of qualified teachers for these contexts, this book promotes teacher-researcher collaboration and provides support for trainee teachers, in-service teachers and course leaders.