Unlock is a five-level academic skills course that combines carefully
scaffolded exercises, a comprehensive approach to critical thinking and
motivating video. Unlock Listening and Speaking Skills Level 4 provides
60-90 hours of classroom material. Access to the Online Workbook is
provided via a code packaged with the Student's Book. Critical Thinking
sections give students frameworks to formulate their own opinions and
express themselves effectively in the end-of-unit academic tasks. Unique
research into common learner errors (using the Cambridge English Corpus)
focuses the language used in Unlock on those areas learners find most
challenging. Videos from Discovery Education(TM) (accessible via the
Cambridge Learning Management System and supplied on the Teacher's Book
DVD) provide new angles on a range of academic subjects.