Using the math balance and the more than 60 activities in this book, students develop a deeper understanding of the arithmetic concepts of quantity, composition and decomposition of numbers, place value, the four operations, and the Commutative and Associative Properties. The activities also support algebraic understanding as students work with variables, equations, and inequalities. Alignment of activities with key math concepts and correlation to the CCSS included. Comes with digital book on CD that includes a virtual math balance. Works on all types of computers and all brands of interactive white boards. 72 pages.