The book presents a flexible framework to help teachers investigate topics that are relevant to their own professional development. The materials are specifically designed to help teachers develop their skills, knowledge and attitudes so that they can become more effective teachers. This versatile resource book contains a comprehensive range of tasks presented in photocopiable worksheet format, which are suitable for many different in-service teacher education and development programmes. Teachers in Action will be of particular interest to teacher trainers in countries which are undergoing educational reform, or where teacher training is being given special priority by the Government and Ministry of Education.