Description: A guide to implementing the EngageNY mathematics curriculum in the elementary grades. Through a balanced approach to lesson design, A Story of Units supports the development of an increasingly complex understanding of the mathematical concepts and topics within the Common Core Learning Standards. Fluency, concept development, and application, all components of instructional rigor demanded by the CCLS (see Instructional Shifts above), are layered to help teachers guide students through the mathematics. Each lesson is structured to incorporate fluency activities along with the development of conceptual understanding, procedural skills, and problem solving.*Teacher Advisor is 100% free.