This is a companion textbook for an introductory course in physics. It aims to link the theories and models that students learn in class with practical problem-solving techniques. In other words, it should address the common complaint that 'I understand the concepts but I can't do the homework or tests'. The fundamentals of introductory physics courses are addressed in simple and concise terms, with emphasis on how the fundamental concepts and equations should be used to solve physics problems.

This book is specially written for students sitting for the Singapore Cambridge O Level Physics examination. A comprehensive coverage of all the topics in the latest 2007 syllabus, as well as a specimen examination paper, enable students to revise effectively and achieve success in their examinations.

The articles in this special issue represent the findings of researchers working in classroom settings to explore key issues in learning through problem solving. Although they vary in the domains being studied, the age of students, and the methods they employ, there are numerous common themes that can inform both theory and practice. The authors have grappled with the complex task of putting problem-based curricula into practice. They report here the difficulties they faced, the factors contributing to their successes, and the lessons they have learned.