With the Fourth edition of the best-selling course book you can now experience the trustedmethodology using the latest in classroom technology:brings the Fourth edition Student's Book and Workbook alive on the classroom wall, complete with interactive exercises, audio and video. The built-in tools like focus, pens and highlighter give you and your students a truly interactive teaching and learning experience.Student Book and Workbook audio for extra practice, plus Student Book video are now available on the Headway