Sometimes you want more than a single textbook. These repositories link to everything from complete courses to individual objects. This is where the volume gets overwhelming, and there is redundancy, as well as old materials or dead links. If you want help searching, please contact Jacque Tygart, or your librarian of choice.
OER COMMONS is a comprehensive site that lets you filter your search many ways. Once you do an initial search, you will have a menu on the left to fine-tune your search results. There are materials from preschool through graduate school, and every media type imaginable.
The MERLOT Collection is made up of over 40,000 materials in 19 different material type categories, and comes from California State University.
Digital Commons Network. Open Access. Powered by Scholars. Published by Universities. Over 3.5 M works by 591 Institutions.
The librarians at George Mason University developed a search tool to search across many open sites at once. Once you run a search, they give you the tools to refine it in a left-hand menu. Be sure to check out the "visual" tab on the left if you want to refine your search visually. MOM searches 21 large, open access repositories with one search.