Rigor: The Common Core has made it policy—and this first-of-its-kind guide takes math teachers and leaders through the process of making it reality. Using the Proficiency Matrix as a framework, the authors offer proven strategies and practical tools for successful implementation of the CCSS mathematical practices—with rigor as a central objective. Readers learn how to

• Define rigor in the context of each mathematical practice
• Identify and overcome potential issues, including differentiating instruction and using data
• Relate specific roles and goals for all stakeholders
• Use assessment tools to guide work and monitor progress

Using the Proficiency Matrix framework along with practical assessment tools, math teachers and leaders will define and achieve rigor in the context of the CCSS mathematical practices.