10

Housed within a shiny red slipcase, this minimalist counting book can be viewed in multiple ways. By turning the pages once from left to right, readers can count from "01" to "10," the black numerals appearing on the left side of each white spread. By proceeding through the book and unfolding each page twice, however, the numbers transform%E2%80%94the top of the "2" swivels, losing its base to become a "9," for example%E2%80%94so readers can count down to "01." While less complex and inventive than ABC3D, the sleek construction should appeal to pop-up fans of any age. All ages. (Aug.)