Book excerpt: Science Year 4 covers all relevant topics including habitats, plants, solids, liquids and gases, electrical circuits and friction. Rigorous exercises and scientific activities throughout are certain to challenge and engage young scientists. Together with Science Year 3, this book is ideal to underpin a course of study leading to Common Entrance and other independent school entrance exams at 11+. - Endorsed by ISEB - Packed with challenging exercises and practical activities to stimulate and enthuse young scientists - 'Did you know?' boxes encourage an active interest in science and the world around us - Rigorous extension questions will stretch and challenge the most able