This book aims at making contributions to the ongoing policy debates in education reform and the creation of a new knowledge base that can serve all endeavours at different levels for teaching effectiveness and teacher development in different parts of the world. The target audiences are teacher educators, educators, graduate students, researchers, policy makers and those interested to reform education and teacher education for the new century. This edited volume includes 19 chapters grouped into three sections: Research and Analysis of Teaching Effectiveness and Teacher Development; The Teacher as a Professional in a Changing Context; and Innovations and Trends in Teacher Development. The authors of these chapters are experienced and renowned scholars and researchers from different parts of the world. They present to the international readers a very wide range of perspectives, approaches, and research findings that are crucial to our pursuit of a new knowledge base for effective teaching and teacher development in the new millennium.