The level 4 workbook includes a total of 12 units. Each unit contains a selection of exercises for practicing and reinforcing the content presented in the student's book (either individually or in class). There is a completely new section titled 'Processes and Strategies', which includes exercises designed to enhance learning strategies. This section is presented over 2 pages and is included after every 2 units. In the final appendix, you will find: activities related to the videos, audio transcriptions, and answers to the exercises.