Open Educational Resources (OER): Mathematics

The College Open Textbooks Collaborative, a collection of twenty-nine educational non-profit and for-profit organizations, affiliated with more than 200 colleges, is focused on driving awareness and adoptions of open textbooks to more than 2000 community and other two-year colleges. This includes providing training for instructors adopting open resources, peer reviews of open textbooks, and mentoring online professional networks that support for authors opening their resources, and other services. -College Open Textbooks.

This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available over the Internet.

"Free and open" online learning materials - mostly bite-size pieces rather than whole textbooks.

This catalog contains hundreds of college-level open textbooks from higher education institutions around the world.

OpenStax College offers students free textbooks that meet scope and sequence requirements for most courses. These are peer-reviewed texts written by professional content developers.

This library is a tool to help instructors find affordable, quality textbook solutions. All textbooks in this library are complete and openly licensed.