Matrix" is a three-level series, from pre-intermediate to intermediate level, which prepares students for secondary school leaving exams. It develops grammar, vocabulary and the four main skills within an exam context. Engaging texts provide authentic input for the development of students` reading and listening skills and provide cultural information. Each unit is theme-related, with topics chosen for their appeal to 16-19 year-olds. Grammar is presented and practised by contrasting structures and tenses which are commonly confused. "Exam training" boxes offer students practical advice on developing both study skills and examination techniques. Speaking is practised through a wide range of controlled and freer activities, encouraging students both to take part in more structured discussions and to express their own ideas. Listening texts are based on authentic materials and feature a variety of speakers and accents.