This book features 48 engaging activities designed to help children master early skills such as counting, subitizing, the decomposition of numbers, and more through using a Rekenrek (not included and sold-separately). Each lesson is correlated to the Common Core content and practice standards and includes step-by-step instructions, suggested assessment questions, and reproducible blackline masters. Also included is a link to a virtual Rekenrek - great for classroom display! 180 pages. Grades K-1.