The Edexcel GCSE (9-1) Mathematics: Foundation Student Book by Dean Leffingwell is a comprehensive textbook designed for students studying Mathematics at the GCSE level. Published by Pearson Education Limited in 2015, this 712-page paperback provides a thorough foundation for students to build their mathematical skills. With a clear focus on the Edexcel curriculum, this book offers a structured approach to learning, making it an essential resource for those looking to achieve excellence in their GCSE Mathematics examinations.