Answered By: Katie Hutchison Last Updated: Jul 05, 2017 Views: 21
"OER are teaching, learning, and research resources that reside in the public domain or have been released under an intellectual property license that permits their free use and re-purposing by others. Open educational resources include full courses, course materials, modules, textbooks, streaming videos, tests, software, and any other tools, materials, or techniques used to support access to knowledge." 
There are quite a few lists already created by other libraries that list great, free OERs. Here are just a few.
- University of Melbourne: Free Online Resources for Teachers
- The University of Oklahoma: Open Educational Resources
- University of Illinois at Urbana-Champaign: What are OER?
- Lansing Community College Library: Open Education Resources
- Belk Library and Information Commons, Appalachian State University: K-12 Open Education Resources
- OER Commons
If you are looking for something specific, contact Education Liaison Librarian Katie Hutchison at email@example.com