This book investigates the pedagogical strategies required to teach addition and subtraction concepts to elementary students through interactive games and contextualized story problems. Marlene Kliman, a researcher associated with the TERC organization, utilizes her extensive background in mathematics education to present a structured framework for classroom instruction. The text argues that students develop a more robust understanding of numerical operations when they engage with concrete scenarios rather than abstract rote memorization. By integrating these activities into a broader curriculum, the author provides a methodology designed to foster mathematical fluency and logical reasoning in young learners.

Educators frequently cite this work as a practical resource for implementing the Investigations in Number, Data, and Space curriculum. Experts highlight the clarity of the instructional design, noting that it serves as a foundational guide for teachers seeking to improve student comprehension of basic operations.