The following search engines and repositories will lead to a variety of OER materials. Advanced search options are best when looking for a specific type of material. You may also search Google and/or YouTube using the permissions filters. Don't forget to check under the Subject-Specific Resources and Open Media Resources pages.
The Mason OER Metafinder
Created by George Mason University and Deep Web Technologies, the search box below will search 15 different OER sites.
Open, online courses with content that can be retained, reused, revised, remixed, and redistributed.