This book has been specifically edited for the new two-tier GCSE specification for first examination in 2008 by the highly successful author, David Rayner. The book is targeted at the Foundation tier GCSE, and it comprises units organised clearly by topic. Each unit offers: *Summary of objectives at the start so it is clear what students need to know *Clear explanations with examples showing the key techniques *Plenty of practice with clearly differentiated questions pitched at an appropriate level *Summaries and past exam questions to help students gain responsibility for their learning It forms part of a series of two student books at GCSE, in which the other book caters for the Higher tier.