The authors of --a scientist, a Montessori teacher, and an Emergent Curriculum advocate--come from different backgrounds and all offer unique expertise to the book. This combination gives the book a particularly interesting and stimulating approach, and makes the book usable for any teacher. encourages teachers to listen to and observe young children to better understand how they think about their world. The book uses these prompts to expand into useful and appropriate math experiences. Teachers will encourage children to use their senses and bodies to explore ideas, record and talk about the concepts, and to learn how math feels, tastes, and looks. Activities in use the scientific ideals of testing, evaluating, exploring, experimenting, problem solving, making guesses, and forming a hypothesis, while utilizing interesting materials and environments in mathematical ways. Special features of this book encourages children's thoughtful considerations, theory development, and logical exploration. It discourages interrogation or forcing a yes or no answer. Teachers are encouraged to observe children's play when introducing math concepts, or environment in ways that are appropriate at that time and for those children. This approach helps children learn math concepts as they are ready for them. is written so that teachers can easily access and use the activities. The authors suggest materials and activities as well as describe ways to talk with the children or to encourage further exploration over future days or weeks. Teachers can find activities that best suit children's needs, or use the ideas to set up environments that will encourage children to explore math. will enrich the lives of children, introduce concepts that build foundations for a lifetime of learning, encourage wondering and exploration, and provide encouragement for adults to make early childhood a real math playground!