estimation

MangaHigh - Cool, Free Middle School & High School Math Games

Submitted by Ellen on Tue, Apr 27, 2010 - 8:08am

Here's a find-- free, online games to help kids learn upper level math and mathematical thinking.  Emphasizes getting the correct answer quickly, and the games are challenging. 

Topics include Algebra, Geometry, Trigonometry, Estimation, Times Tables, Fractions, Decimals...

Cyberchase

Submitted by Ellen on Sun, Jun 7, 2009 - 5:31pm

A website with games related to the PBS tv show "Cyberchase".  A wide variety of elementary math concepts are taught.