Helping students develop an understanding of important mathematical ideas is a persistent challenge for teachers. In this book, one of a three-volume set, well-known mathematics educators Margaret Smith, Edward A. Silver, and Mary Kay Stein provide teachers of mathematics the support they need to improve their instruction. They focus on ways to engage upper elementary, middle school, and high school students in thinking, reasoning, and problem solving to build their mathematics understanding and proficiency. The content focus of Volume Two is algebra.

The new edition of this textbook and professional development resource offers a new foreword by James Hiebert and two new chapters focusing on the ways in which the book can be used to support the learning of teachers and administrators, drawing on the authors' work over the past decade.