According to The William and Flora Hewlett Foundation, "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."
OER allow users to:
Retain -- users have the right to make, archive, and own copies of the content
Reuse -- content can be reused in its unaltered form
Revise -- content can be adapted, adjusted, modified, and altered
Remix -- original or revised content can be combined with other content to create something new
Redistribute -- copies of the content can be shared with others in its original, revised or remixed form.
Source: Lansing Community College (LCC) Library Research Guide on Open Educational Resources (OER) by Regina Gong is licensed under a Creative Commons Attribution 4.0 International License.