Interchange Third Edition is a 4-level series for adult and young adult learners of English from the beginning to the high-intermediate level. The Student's Book B, Level 2, builds on the foundations established in Level 1 for accurate and fluent communication, extending grammatical, lexical, and functional skills. Student's Book A contains units 9-16, the first half of the full Student's Book, along with 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 section from the Student's Book. As with the other levels of Interchange Third Edition, a complete set of ancillaries is available to make classes productive, varied, and fun.Richards, Jack C. is the author of 'Interchange Student's Book 3b', published 2005 under ISBN 9780521602211 and ISBN 0521602211.