This thorough and practical guide to teaching mathematics for grades K–6 is a perfect combination of a math methods text and resource book for pre-service and in-service elementary school teachers. The texts organization uses the Common Core State Standards as its overarching framework. Over 275 lesson activities reinforce the standards and include many examples of cooperative learning strategies, take-home activities, and activities using technology such as apps. Content chapters first "develop" a math topic, and then "extend" the same topic, providing foundational material that can be used throughout the elementary grades. Other useful features highlight misconceptions often held about math operations and concepts, ways to be inclusive of various cultural backgrounds, and key technology resources.