Our hands help us interact with the world. For babies, hands are used to understand new parts of the world they have never seen before. The older we get, the more we use our hands. Hands are used to communicate, interpret, and understand the world around us. Through this book's age-appropriate language and content, readers discover the different parts of their hands and how they work together to do everything they like to do, such as hold a pencil, give a high five, and fingerpaint!.