For more information on Open Texts and on Open Educational Resources (OERs), check the guide linked above.

These open-source or open-access textbooks have been judged to meet the evaluation criteria set by the AIM editorial board, and cover a wide range of topics at levels appropriate for undergraduate and Master's-level students in mathematics.

A collection of freely available, peer-reviewed texts in Mathematics and Statistics covering a wide range of subjects and skill levels.

The Orange Grove is Florida's digital repository, and hosts hundreds of open texts that are related to mathematics.

An extensive library of content, including interactive challenges, assessments, and videos.

Merlot II is a free and open peer reviewed collection of online teaching and learning materials and faculty-developed services. You can search by learning material type and collection. Create an account to create your own collections in Merlot, and use the content builder to create mash-ups of existing materials for your classroom.

Create playlists of content for your own course. The User's Guide contains direct links to subjects and collections.

Videos, lesson plans, texts and more. Most Creative Commons licensed. Includes resources like Khan Academy. Includes post-secondary materials.