I took the Math subtest III yesterday - calculus and history of math. I think that most of the sites have been shared already, but I came across a great resource for history of math that really helped on the test.
go to youtube and search BBC History of Maths. They did a four hour series starting with the ancient Egyptians up to the 20th century. It covers all the high points and really helps you visualize math history. I watched a bit each evening for a couple weeks.. a great break from calculus problems and actually really interesting (at least for someone that likes math). Take some notes though to ensure you can keep the folks straight.
Other resources used for Math Subtest III:
Started with a Calculus textbook just to clear the cobwebs out since it has been awhile since I've done calculus. Focused on chapters covering limits, derivatives and applications, integrals and applications, and series.
The Orange County Department of Ed test prep book was excellent -- provided some samples across pretty much all the areas of the test -- although don't worry too much about memorizing all the proofs... just understand the main concepts and how to apply.
Khan Academy videos (search for them on youtube) are a great supplement to the OCDE materials... OCDE is more a workbook and meant to be used with an instructor. Khan Academy videos help provide the intuition and descriptions for the content.
The UC Irvine materials were okay .. but aren't my favorite resource. As noted earlier, there are a few mistakes in the website and I don't think they give enough description to help you understand, but it does help you see the types of topics on the test to help focus your study.
As always, the sample test on the CSET website is indispensable. While the test questions aren't identical, many of them rely on similar concepts. Make sure you can do every problem on the sample test and really understand why you got the answer you did.
That's it
