Book excerpt: Focused revision for your best possible grade These enhanced Student Unit Guides are perfect for revision. They explain the unit requirements, summarise the content and include specimen questions with graded answers. Each full-colour New Edition Student Unit Guide provides ideal preparation for your unit exam: Feel confident you understand the unit: each guide comprehensively covers the unit content and includes topic summaries, knowledge check questions and a reference index Get to grips with the exam requirements: the specific skills on which you will be tested are explored and explained Analyse exam-style questions: graded student responses will help you focus on areas where you can improve your exam technique and performance