Book excerpt: Balanced Science is a two-volume resource designed for use in Key Stage 4 GCSE coordinated science courses. The second editions have been fully updated to match the latest double-award GCSE science syllabuses. Useful features include: topics organised into double-page spreads for ease of use and understanding; questions throughout the text and at the end of each section to test students' understanding; core text containing the minimum knowledge required for GCSE; extension text and questions to stretch more able students; high-quality, accurate illustrations produced by Geoff Jones, which help to clarify and enliven the subject matter; instructions for experimental work to guide students' investigations; full colour throughout.