A “an array of teaching materials” and “a theory of the nature of teaching”
B “a set of educational resources” and “a set of principles about language”
C “a group of teaching technologies” and “an account of the role of the language skills”
D “a set of procedures for teaching a language” and “a philosophy of language and teaching”
E “a single teaching technique” and “a position about the roles of teachers and learners”