"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." [1]
The Open Education movement is built around the 5Rs of Open Content [2]
This video is licensed CC-BY and should be attributed to "intheacademia"