InterchangeLevel 3B,: Student's book (Fifth edition)

Teach with confidence, using the world's favorite English course. Interchange is a four-level, American English course that has been used by over 50 million students worldwide.

This Level 3B Student's Book includes units 9-16, four progress checks, and a Grammar Plus section to ensure that students receive all of the practice they need.

Inside each book is a single-use code for online self-study material.

This gives access to videos and hundreds of automatically graded exercises, and works on PCs and Macs.