- The modular structure of the Student"s Book allows course pathways to be built according to the student"s needs whether focusing on input, speaking, vocabulary etc. Case studies, ideal for independent study, use true business scenarios to challenge the students and push them to develop both their language and business skills.The DVD-ROM comes as part of the Student"s Book and provides over 4GB of extra study material, making it ideal for self study, but can also spice up classes by introducing digital media. The units match those of the Student"s Book and each contains a video that features business situations which add a visual framework to the elements learnt throughout the course.