This document is the teacher's edition of the fifth edition of the Interchange intro book. It includes an overview of the contents of the student's book and workbook, as well as teaching notes, speaking exercises, grammar explanations, listening exercises, and reading activities for each of the 16 units. The units cover topics such as greetings, possessions, places of origin, daily routines, homes, jobs and workplaces. The teaching notes provide guidance for instructors on teaching grammar, vocabulary, pronunciation and cultural points for each lesson.