Open Educational Resources are teaching, learning, and research resources released under an open license that permits their free use and repurposing by others. OER can be full courses, course materials, lesson plans, open textbooks, learning objects, videos, games, tests, software, or any other tool, material, or technique that supports access to knowledge.
Open Educational Resources are broadly considered to meet the “5Rs Framework,” meaning that users are free to:
From http://sparcopen.org/open-education/. SPARC® is the Scholarly Publishing and Academic Resources Coalition.