In this book/DVD package, Driscoll, a math education consultant, outlines research-based ways to help students in grades 5-10 conceptualize and apply geometric ideas. The book focuses on rigorous, problem-based teaching that encourages students to deepen their thinking in geometric properties, geometric transformations, and measurement of geometric objects. It includes problems for use in the classroom, examples of student solutions to these problems, and transcripts of classroom interactions. The DVD contains in-the-field footage of students working through open-ended problems highlighted in the book. The author is co-director of the Center for Leadership and Learning Communities at Educational Development Center, Inc. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)