Teaching by Design in Elementary Mathematics is a series o comprehensive professional development guides that helps teachers investigate how students learn. Grounded in the latest research, this book is one of three volumes focused on grade-appropriate number and operations topics aligned with the Common Core State Standards. The capstone activity of each book guides the group through the co-creation and implementation of a prototype lesson. The teacher teams then evaluate the impact of the lesson on student learning and work together to revise it for maximum effectiveness. Through the process, teachers develop<BR><BR>-Deeper content knowledge of important mathematical concepts<BR><BR>-Improved understanding of how students learn these mathematical ideas<BR><BR>-A stronger foundation for developing effective lessons and improving instruction<BR><BR>-Enhanced collaboration skills