Directory of Open Access Books is an organization dedicated to increasing the discoverability of Open Access books and has resources in a variety of disciplines.
This resource managed by the California State University system is a curated collection of free and open online teaching, learning, and faculty development services contributed and used by an international education community.
On the left side of the webpage, filter for Audience.
MIT Open Courseware Online Textbooks library of online textbooks is one of the few sources for OER on aeronautics, civil engineering and material science, among many other disciplines.
A large repository of materials that allows the user to search and identify resources by discipline and level.
On the left side of the webpage, use the Education Level filter to narrow your results.
The Teaching Commons brings together high-quality open educational resources from leading colleges and universities. Curated by librarians and their institutions, the Teaching Commons includes open access textbooks, course materials, lesson plans, multimedia, and more.
Open Tools, Learning Objects, and More for Chemistry
This resource managed by the California State University system is a curated collection of free and open online teaching, learning, and faculty development services contributed and used by an international education community. Includes case studies, simulations and online learning modules.