This highly successful book has been extended to include new topics in line with the latest Science National Tests. It continues to provide the most comprehensive approach to test success with its unique combination of study support and test practice. It also contains the latest Test Marker's comments. Written by chief markers and highly experienced teachers, Revision Guide KS3 Science provides an authoritative but practical approach to revising for KS3 National Tests. The book is divided into short revision sessions organised by level so students can use the book wherever they are in their KS3 course. 'Check yourself' sections throughout ensure revision is active and effective. Test questions are provided at every level with model answers and practical advice from test markers on how to boost grades.