## Calculation Nation

#### Challenge others and challenge yourself at calculationnation.nctm.org

**About Calculation Nation**^{®}

^{®}

Calculation Nation^{®} uses the power of the Web to let
students challenge opponents from anywhere in the world. At the
same time, students are able to challenge themselves by investigating
significant mathematical content and practicing fundamental
skills. The element of competition adds an extra layer of excitement.

The games of Calculation Nation^{®} are organized around content from the upper elementary and middle grades math curriculum.
By becoming a citizen of Calculation Nation^{®}, your child or
student will play online math strategy games that allow
them to learn about fractions, factors, multiples, symmetry and more,
as well as practice important skills like basic multiplication
and calculating area — all while having fun.

“The games on Calculation Nation^{®}provide an entertaining environment where students can explore rich mathematics,” said Jim Rubillo, former Executive Director of the National Council ofTeachers of Mathematics (NCTM). “Through these games, students are exposed to the same mathematical topics that they see in class as well as those that are recommended in Curriculum Focal Points."

“It has been great to see students, who might not otherwise pair up, find each other online and play the games with each other,” said Flores, a teacher who uses Calculation Nation as part of her math "rotations". It is fun for students, and Flores is comfortable using it because, “[she] has confidence in the quality since it is from NCTM.”

"Every day at the beginning of my class, I play a game on CN. It is successful because students can play on their own outside of class. The games are well designed, and the students benefit mathematically." -John Donovan, Ph.D Associate Professor (Plymouth State University)

**Related Resources**

Not sure how to use Calculation Nation^{®} in your classroom or at home? We've got you covered!

- (Grades 3–5) Factor Dazzle: Chocolate FACTORy: Finding Factors of Numbers 1 Through 36
- (Grades 3–5) Fraction Feud: Comparing and Ordering Fractions
- (Grades 3–5) Dig It: Digging up Improper Fractions: Converting Improper Fractions to Mixed Numbers for "Dig It" Game
- (Grades 3–5) neXtu: Geometry in Computer Games? An Exploration of Tessellations Used in neXtu
- (Grades 3–8) Drop Zone: Adding Fractions with Like and Unlike Denominators Utilizing Strategy
- (Grades 3–8) Square Off: Fair and Square: Using Concrete-Pictorial-Abstract Activities to Maximize Area
- (Grades 3–8) Times Square: Reinforcing Multiplication Skills Using Factors and Strategy
- (Grades 6–8) Equations of Attack: Equations of Attack
- (Grades 6–8) Ker-Splash: Identifying and Combining Like Terms
- (Grades 6–8) Dirt Dash: Planning the Fastest Route across Various Terrains
- (Grades 6–8) Prime Time: Using Computer Games to Facilitate Finding Probability of Independent Events
- (Grades 6–12) Flip-n-Slide: Exploring Transformations through Modeling and Computer Games
*A Family's Guide: Fostering Your Child's Success in School Mathematics*(PDF, 1.4M)- "Families Ask," supplement to A Family's Guide (PDF, 140K)

**Questions? Comments?**

Contact Us! We'd love to hear from you!

### Calculation Nation at Work

- Read about how Dana Slevin successfully uses Calculation Nation at home.
- Read about how Diana Flores uses CN as part of her math "rotations".