The course reflects the fact that English is a language of international communication, not limited to one country, region or culture. Changes is based on a multi-skills syllabus which integrates structural, functional, lexical, phonological, situational and thematic syllabi. The methodology reflects a communicative approach and ensures that students have every opportunity to develop confident communicative ability as well as accuracy in English.

New Interchange is a multi-level series for adult and young-adult learners of English from the beginning to the high-intermediate level. The Teacher's Edition features page-by-page instructions directly opposite full-size, full-color reproductions of the Student's Book pages. It also contains teaching suggestions, answer keys for the Student's Book and Workbook, listening scripts, optional activities, and photocopiable Achievement Tests with their own listening scripts and answer keys.