Steve Dembo from the Teach42 blog, links to The TechSavvy Educator blog, who links to Tony's Pizza Game and believe me, it's sloooowww good. The MrNussbaum site, for K-8 educators is one of those sites that is sure to take you off task in a good way and is a keeper (it's also free). You'll leave the site saying "WOW!" The students (or me) will never hate fractions or decimals again!" And if you're a pizza lover like me, (although the gluten in it doesn't agree with me) the visuals and interactive features are real. You'll also love these math fries, and the death of decimals.