The volumes in the School Mathematics series contain brief review notes, selected questions with detailed solutions, and test questions with answers. Most questions in Volume 4 have been taken from the book "Integrated Mathematics for Explorers" by Adeline Ng and Rajesh R. Parwani, and the solutions from the accompanying Solutions Manual by Chee Leong Ching and Sun Jie. Topics covered in this volume: Coordinate Geometry, Plane Geometry and Trigonometry.