The document discusses various approaches and methods in language teaching. It defines approach as referring to theories about the nature of language and language learning. There are three main theoretical views of language that inform approaches: 1) the structural view which sees language as a system of coded meaning, 2) the functional view which sees language as a vehicle for expression, and 3) the interactional view which sees language as a tool for social relations. These theoretical views provide the framework for language teaching methods but need to be complemented by theories of how language is learned.