Math on the Web

Ever thought about looking for math stuff on the web? It seems like math has been limited to calculators and notebook paper, but in today's world, it's all over the Internet too! Here are a few of my favorite math-related websites.
Math History and So Much More!: MacTutor is a site that I have learned to love. I discovered it in a math history class and found that it was a great source for anyone or anything in the history of math. Wonder where a theorem or subject came from? MacTutor can probably help you find it! They have everything from biographies of famous mathematicians throughout history to math primary sources to mathematicians of the day. It has a lot of fun trivia-style knowledge about anything in math history.
Cool Math Societies: Both the American Mathematical Society and Math Association of America seem to be societies for people who are seriously into math research, but in reality, both are open to high school students! These sites list off benefits of being a member and offer hints for mathematicians. However, they are also full of information. They offer some of their publications online and offer more fun hints and tips like the MacTutor sites. Plus, both have competitions, one specifically for high schoolers! Check out MAA's minute math and numberaday for some fun stuff you won't find in a traditional math class!
Math=Cool??: Coolmath.com looks like one fun site! With specific areas based on subject matter, for students, for parents and just for fun, it seems to cover it all. It offers both help for those who are struggling and ways to extend what you've learned if you're bored in math. There are also links to other sites related to math and other school subjects. It seems to be not quite complete, but the information on it seems to be organized well and also presented well.
So what are you waiting for? Math is waiting for you online!