Unlock is a four-level academic skills course that combines thought-provoking video from Discovery Education™ with carefully scaffolded exercises and a fresh approach to critical thinking skills. Unlock Listening and Speaking Skills 3 Presentation Plus DVD-ROM is ideal for use in the classroom and encourages \'heads-up teaching\'. The software can be used on an interactive whiteboard, portable interactive software technology, or with a computer and a projector. With Presentation Plus, teachers can present the Student\'s Book, play the Class Audio, view the videos, and display scripts and answer keys. Presentation Plus tools allow teachers to mark up and add links to the components whilst also allowing them to save their sessions. In addition, teachers can also connect to Cambridge Dictionaries Online for additional reference and language support.