"The construction of adaptive expertise in mathematics is, for the first time, examined across various arithmetic topics and age groups. This book will be an invaluable resource for researchers and graduate students interested in mathematical cognition and learning (including mathematics educators, developmental and educational psychologists, and neuropsychologists), educators (including teachers, curriculum supervisors, and school administrators), and others interested in improving arithmetic instruction (including officials in national and local education departments, the media, and parents).—Zentralblatt fur Didaktik der Mathematik"This is a valuable and important collection....Highly recommended"—CHOICE"The editors A.J. Baroody and A. Dowker have made a great job organising the materials. This will become a classical book on arithmetic concepts and skills."—Zbl. MATH"The Development of Arithmetic Concepts and Skills: Constructing Adaptive Expertise is a very informative book about the important construct of adaptive expertise in education and the everyday life: The ability to use knowledge flexibly. This book will be of much appeal to people who are interested in theoretical, methodological, and applied educational issues related to the development of flexible arithmetic reasoning and beyond."—Contemporary Psychology"This volume is set to become a standard text for anyone with an interest in ALT. Its chapters are research driven, and they severally make decent advances. Useful research reviews are included throughout..."—American Journal of Psychology