"More Than One" by Miriam Schlein is a concise and thoughtful concept book designed to broaden young children's understanding of the number one. It moves beyond simple enumeration, demonstrating how "one" can signify a single unit, a collective group (like a pair or a dozen), or a unified whole (like a forest). The book's strength lies in its clear, accessible examples that invite children to think flexibly about mathematical concepts and language. It's ideal for children aged 4-7, though the publisher's range extends to 11. Parents can use this book to initiate discussions about collective nouns and abstract numerical ideas. It's a gentle, educational read that provides a solid foundation for early math literacy.