Bright, Jordan, Malloy, and Watanabe provide practicing teachers with a hands-on guide explaining the mathematical ideas underlying measurement concepts and processes at the middle school grade level, and showing ways to help students extend their understanding of fundamental ideas. Each chapter includes discussion of specific concepts—accuracy and estimation; perimeter, area, and volume; proportionality; divided measures—followed by a set of related classroom activities. Blackline masters for most of the activities are included in both the appendix and on the accompanying CD-ROM, which also includes applets for students' use and resources for teachers' professional development. No subject index. Annotation ©2005 Book News, Inc., Portland, OR