This book, from a cognitive psychology perspective, explains how children develop their understanding of numbers, from the stage of "counting" to the stage of "understanding fractions." It offers abundant hints useful for educational settings and home learning, addressing questions like: why do children answer in such ways? and how can we guide them to deepen their understanding? Recommended for educators, parents, and those interested in psychology. B6 size, 256 pages. There are some age-related stains and markings in a few places, but it does not affect readability.