# Math

## XtraMath

About Kakooma Kakooma starts with a deceptively simple idea: in a group of numbers, find the number that is the sum of two others. Sounds easy, right? Sometimes it is, but other times the answer is right in front of you and you just can’t see it. To solve a single puzzle, you often end up doing dozens of calculations in your head, sometimes more than a hundred!

## Math Chimp Blog | Educational Games and Online Resources

It’s a big day for Math Chimp — we’ve moved outside our comfort zone! We’ve been collecting online math games for a while now, and we’ve collected and organized over 200 of the best games on the web. But in our quest to make Math Chimp the ultimate Common Core resource on the web, we want Math Chimp to be more than just a game directory — We want Math Chimp to be a one-stop-shop for all the best Common Core resources on the web.

## Resources for a Computer-Based Math Curriculum: Interactive Examples, Essays

Sign in -or- Register Common Core Alignment Eligible for Stimulus Funding, Title 1, eett, & idea >

## Algebra - Elementary Algebra - Homework Help

Can I take a course at HippoCampus for credit? How do I enroll in a course at HippoCampus? Are there any fees to take your courses? How do I make a comment or ask a question?

## Simulations Lesson Plans Reviewed by Teachers

Absolute Value The concept of absolute value has many uses, but you probably won't see anything interesting for a few more classes yet. There is a technical definition for absolute value, but you could easily never need it. For now, you should view the absolute value of a number as its distance from zero. Let's look at the number line:

## Algebra

The word "algebra" is a distortion of the Arabic title of a treatise by al-Khwārizmī about algebraic methods. In modern usage, algebra has several meanings. One use of the word "algebra" is the abstract study of number systems and operations within them, including such advanced topics as groups , rings , invariant theory, and cohomology . This is the meaning mathematicians associate with the word "algebra."

## Math Playground - Online Math Games that Give your Brain a Workout

Maine's Impact Study of Technology in Mathematics (MISTM) was a federally funded collaboration among the Maine Learning Technology Initiative (MLTI) through the Maine Department of Education (DOE), Maine Education Policy Research Institute (MEPRI) and Education Development Center (EDC) in Newton, MA designed to examine the influence of a technology-infused professional development program for 7th and 8th grade mathematics teachers on the mathematics achievement of rural middle school students in technology-rich classrooms. The core goal of the professional development program was to enable grade 7 and 8 teachers and their students in low-performing rural schools to take full advantage of universal laptop availability to enhance mathematics teaching and learning and improve student achievement in mathematics.