Initially adapted from Van de Walle’s market-leading textbook, Elementary and Middle School Mathematics , the Van de Walle Professional Mathematics Series are practical guides for developmentally appropriate, student-centered mathematics instruction from best selling mathematics methods authors John Van de Walle, Jennifer Bay-Williams, Karen Karp, and LouAnn Lovin. Specially designed for in-service teachers, each volume of the series focuses on the content relevant to a specific grade band and provides additional information on creating an effective classroom environment, engaging families, and aligning teaching to the Common Core State Standards . Additional activities and expanded lessons are also included. The series has three 1. To illustrate what it means to teach student-centered, problem-based mathematics 2. To serve as a reference for the mathematics content and research-based instructional strategies suggested for pre-kindergarten to grade two, grades three to five, and grades six to eight 3. To present a large collection of high quality tasks and activities that can engage students in the mathematics that is important for them to learn Volume III is tailored specifically to grades 6-8, allowing teachers to quickly and easily locate information to implement in their classes. The student-centered approach will result in students who are successful in learning mathematics, making these books indispensable for 6-8 classroom teachers!