Arnold Shapiro's "Squares" is a delightful concept book designed to introduce very young children to the square shape. Through a simple, engaging format, possibly with interactive elements given the "toy and movable books" subject, it guides readers to identify squares in common objects like checkerboards and windows. The book's strength lies in its direct approach and visual reinforcement, making it an excellent tool for early shape recognition and vocabulary building. It's best suited for toddlers and preschoolers, offering a gentle and playful learning experience. Parents will find this book useful when their child is beginning to recognize shapes or showing curiosity about the world's forms.