Common Core Math 101 is a companion site to the book ‘A Parents Survival Guide to Common Core Math’ by Christen Nine M.Ed. [aka Mrs 9 the Math Teacher].

Christen Nine has a Bachelors of Science in Mathematics and a Masters of Education in Moderate Disabilities. She is a certified Secondary Mathematics Teacher through the state of Massachusetts. She has taught high school math, both in the classroom and online, and currently serves on the board of directors for Christian Educators Academy, a private online school. Her combined passions for bringing meaningful, continuity to math education across all grade levels, for making math accessible and understandable to all students, and for seeing the Common Core State Standards for Mathematics implemented in a valuable and worthy manner, have been the key motivators behind this project.


You can email Christen at [email protected]