Intro is the introductory level of the Interchange Third Edition series. The Intro Level Student's Book is designed for beginning students needing a thorough, slow-paced presentation of basic functions, grammar structures, and vocabulary. Intro is based on the principle that low-level learning does not equal low-level thinking. The Student's Book contains 16 teaching units, frequent progress checks that allow students to assess and monitor their own learning, and a self-study section. Included is a Student Audio CD that contains the conversation, pronunciation, and self-study sections from the Student's Book.Richards, Jack C. is the author of 'Interchange Intro ', published 2004 under ISBN 9780521601498 and ISBN 0521601495.