Market Leader 3rd Edition Extra develops confident, fluent speakers who can successfully use English in a work environment. A five-level course for young adults and adult professionals. Digital software for interactive whiteboard and computers with a projector. It provides the Course Book in digital format, offering: Course Book pages with zoom features. Video interviews and case study commentaries. Class audio with time coded audio scripts. Interactive activities. Phonetic charts. Teacher notes and printable worksheets. iGlossary, Grammar reference and Writing Files. Help videos.