Interchange Fourth Edition is a four-level series for adult and young-adult learners of English from the beginning to the high-intermediate level. For those students who prefer to study and practice from their personal computers, a downloadable Digital Student's Book for each level of Interchange Fourth Edition provides them with digital tools and the same great content. Interchange Fourth Edition Level 2 DigiBook A features the Student's Book in digital format with full class audio, full class video, audio and video scripts for further support, and corresponding Video Activity Worksheets. Pen tools allow students to highlight, mark, note, and draw. Interchange Fourth Edition DigiBook also allows students to save notes, marks, highlights, and bookmarks between sessions.
Jack Croft Richards is an applied linguist from New Zealand, specializing in second and foreign language education, teacher training, and materials design. He has written numerous articles and books. Most of his books and articles are in the field of second language teaching and have been translated into many different languages. He was appointed full professor in the Department of English as a Second Language at the University of Hawaii in 1981.