11 books in series

Math Matters®

Math Matters® is a 11-book series with 11 released primary works first released in 1999 with contributions by Barbara deRubertis, Annie Cobb, Linda Williams Aber, Daphne Skinner, Mel Friedman, Sue Kassirer, Pamela Pollack, Meg Belviso, Lucille Recht Penner, and Laura Driscoll.

Carrie Measures Up
Chickens on the Move
The Long Wait
Tightwad Tod
What's Next, Nina?
X Marks the Spot!
Henry Keeps Score: Comparing
Count on Pablo
Who's Got Spots
Kitten castle
The Blast Off Kid