* Echo: Each level contains eight 12-page units, plus a Review Unit
* Each unit is written around its own theme, and includes systematic
presentation of new language items, controlled practice, guided reading
and writing activities, a song, production activities and a grammar review.
* At the highest two levels, Echo Intermediate A and Echo Intermediate B
there is a greater focus on reading and writing strategies
* Optional Workbooks for levels 1-4ning and regular
progress tests - everything students need to help them get the best