An engaging and straighforward series that uses textbook and CD-ROM to teach the OCR Gateway specification B. The Cambridge Gateway Additional Science classbook includes self-assessment questions and concise summaries to tie everything together and show the students what they need to know for the examination. Strong coverage of concepts and clearly flagged Higher-tier materials motivate and stretch your students. The context -based approach also helps you explain difficult concepts and saves you time finding other resources. Cambridge's proven success in publishing for OCR is combined with an experienced author team. This offers you a coherant approach to the syllabus content that you can trust and saves you planning time