Math Mattres, first published in 2000, quickly became an invaluable resource for math educators nationwide, helping them clarify their own understanding of the math concepts they were required to teach.  This important book contains activities and discussions on key elementary topics such as whole-number computation, fractions, algebra, geometry, and measurement. 

The book's scope has now been expanded to address topics in the middle school math curriculum as well, including sections on integers, exponents, similarity, the Phytagorean theorem, and more.  Other new features include a chapter on ratios and rates; a significally expanded chapter on algebra; and appendix of relevant web sites; and questions for reflection and discussion