This book provides an introduction to the nature of collaborative action research, explains how to engage in the action research process, and offers readers insights into how collaborative action research may be embedded in everyday classroom practice. The latter objective will be accomplished by engaging the reader with four case studies about teachers who took part in collaborative action research. Each case study focuses on teacher beliefs about science teaching and learning, how school-based teams of teachers develop and implement plans of action in their classrooms, and how action research results in changes teacher learning and classroom practice. This book will be of interest to anyone who wishes to develop an understanding of or engage in collaborative action research, especially practitioners and teacher educators.