Viewing current developments in materials development through the eyes of developers, users and researchers from all over the world, this book applies principles to practice. It provides a comprehensive coverage of the main aspects and issues in the field as well as critical overviews of recent developments in materials development, and acts as a stimulus for innovation. Now revised and updated to take account of developments over the last decade, this 3rd edition features: - 8 new chapters, covering materials use, blended learning, multimodality, intercultural competence, communicative competence, the practical realisation of theoretical principles in the development of digital materials, the teaching of right to left languages and the commodification of grammar. - Fully updated chapters with contemporary examples and considering teaching second and foreign languages other than English. - New pedagogical resources, with the addition of tasks and further readings for each chapter. - New online resources, 2 new chapters on producing videos on teacher development courses and materials development on teacher training courses and 2 updated chapters on development courses for teachers and simulations in teacher development, alongside a range of additional tasks and further reading suggestions.