The Student's Book provides approximately 80 hours of core teaching material, which can be extended to 120 hours with the inclusion of the photocopiable resources and extra ideas in the Teacher's Book. Each self-contained double-page lesson is easily teachable off the page with minimal preparation. The Student's Book comes packaged with a free fully-interactive CD-ROM/Audio CD with over 200 exercises in all language areas, including video, games, recording capability, progress chart and customised tests. There is also a selection of material from the Real World lessons which can be listened to on normal CD players. The CD-ROM/Audio CD contains supplementary exercises. The corresponding Audio CDs are only sold separately.