"MathMovesU.com will supplement your classroom curriculum. It's designed to help middle school math students practice and improve their math skills. MMU combines stuff kids are into like music, sports & fashion with algebra, geometry, decimals, fractions & word problems."
The Math Connection Workshop is a math problem solving workshop wiki for students around the world. Students create pose real world questions and problems in their own pages, and classes are partnered to work collaboratively with others.
This 2nd Grade Math practice test covers some of the basic skills taught and mastered in second grade, including addition and subtraction, counting to 100, identifying and writing names of numbers, basic multiplication and division, place value and telling time.
University of Kansas project "to improve middle school reading and math achievement through the development of interactive educaitonal games hat use PDAs, iPods and video cameras, along with web-based resources . . ."