Ms. Camsie Matis, an award-winning mathematics teacher from NY who is now at the National Science Foundation with the National Lab Day Project, is speaking with us on January 28, 6-8pm about creative writing in the mathematics classroom.  Below are the links to two books she suggests:

Do the Math: Secrets, Lies, and Algebra by Wendy Lichtman
From $6.99 on www.amazon.com

For upper-level math teachers, Camsie recommends the sequel, which covers more advanced concepts.
Do the Math 2: The Writing on the Wall by Wendy Lichtman
From $11.55 on www.amazon.com (hardcover only right now)