Interactive Sites for Education

I used google.com and looked up "educational websites for math".  I found a website called Interactive Sites for Education.
The website when opened up showed a multitude of math concepts, skills, and logic ideas.  It looked similar to the previously mentioned Math Playground website.  The Interactive Sites for Education however link many websites with knowledge rich games.  The web designers did not only promote their own games.  This website has teaching tools, typing games, and other content area games based on skill.  Students can use one website to assist with all their classes.  I can see myself using this website.  It would not necessarily be for math since I do not teach mathematics.  It may be my new favorite website for my classes.  It can help for all ages.