This document is the front matter of the Messages 3 Teacher's Book. It includes:
1) A table of contents listing the modules, units, grammar, vocabulary, skills, and tasks covered in the student's book.
2) An introduction welcoming the reader to Messages, a lower-secondary English course providing 80-90 hours of classwork.
3) Copyright information for Cambridge University Press, the publisher, and listings of the ISBN numbers for the teacher's book, student's book, workbook, and other components.