This yearbook presents many aspects of mathematics learning by children between the ages of three and eight. Addressed to teachers of primary school children, the book begins with chapters discussing learning and cognition, the primary curriculum, and research on mathematics learning at this age level. Eight subsequent chapters deal with the teaching of specific mathematics content: problem solving; mathematical experiences; number and numeration; operations on whole numbers; fractional numbers; geometry; measurement; and relations, number sentences, and other topics. The final chapter discusses curricular change. A major theme throughout the book is the importance of experience to learning, and the building of new knowledge on the foundation these experiences provide. The book is designed to provide easy reference to both general information, such as answers to research questions, and suggested classroom activities related to specific topics. Many illustrations, the use of two-color printing, and a detailed index aid the user in this regard. (SD)