If you are looking for free math resources, I found a website that offers peer-reviewed math ebooks for college and AP Courses. This website is **OpenStax** which is based in Rice University and supported by several foundations. Below are the links to the math ebooks.

- PreAlgebra
- Algebra
- Algebra and Trigonometry
- Precalculus
- Calculus I
- Calculus II
- Calculus III
- Statistics

Aside from the math ebooks on Science, Social Science, Humanities, and AP Courses are available on the website.

For more free resources, you can visit Math and Multimedia’s **All for Free** page.