|Math 140, Calculus 1||Math 430||Math 475W|
|History of Mathematics|
Is College Worth It? by John Green
I don't necessarily check these regularly so if you find a
please let me know.
The Interactive Mathematics Miscellany and Puzzles is more fun than people.
The Glossary of Mathematical Mistakes and the 100 Most Common Errors in Undergraduate Mathematics give substantial listings of what not to do on your homework, quizzes and exams.
You can buy your own Klein Bottle here. Disclaimer: I am not endorsing this product, nor am I recommending that you buy one. I just think this site is a lot of fun.