Focus on the teaching and learning of mathematics through the use of games. Based on current research and correlated to the Common Core and other state standards, this resource provides both teachers and students with rich opportunities to engage in the Standards for Mathematical Practice. Each concept-building game supports students' learning and understanding concepts. Games are provided in the following categories: Counting and Cardinality; Operations and Algebraic Thinking; Expressions and Equations; Functions; Numbers and Operations in Base Ten; Numbers and Operations--Fractions; The Number System; Ratio and Proportional Relationships; Measurement and Data; Geometry; and Statistics and Probability.