This document provides instructions and vocabulary for a telephone conversation lesson. It includes:
1) The goal of making and answering phone calls and expressing related phrases like "call back", "hang up", and "leave a message".
2) A list of new vocabulary words and their meanings related to phoning.
3) A note to listen to a sample conversation on CD to understand the expressions and complete example sentences.
4) A brief grammar lesson on using the articles "a" and "the" with examples specific to leaving phone messages.
5) A homework assignment to write a short telephone conversation.