ALTER ego 1 workbook serves as a complement to the student"s book and is based on the same structure.It reinforces students" skills through a wide range of activities on: - vocabulary, - grammar, - communication skills, - written comprehension ans expression.The students can carry out the activities in the classroom or on their own.The portfolio at the end of the workbook is designed to help students reflect on and improve their language learning.ALTER ego 1 also includes: - a student"s book with a CD, - a teacher"s book, - three class audio CDs, - one video DVD.