Teach with confidence, using the world\'s favorite English course.
Inside each Book is a single-use code for the eBook with audio, which is mobile-friendly and can be used on a smartphone, tablet, or computer..
It has 16 units, four progress checks, and a Grammar Plus section to ensure students receive all the practice they need.
This Intro Student\'s Book with eBook includes access to an eBook with audio.
Interchange is a four-level, American English course that has been used by over 50 million students worldwide.
Teach with confidence, using the world\'s favorite English course