According to UNESCO, "Open Educational Resources (OER) are learning, teaching and research materials in any format and medium that reside in the public domain or are under copyright that have been released under an open license, that permit no-cost access, re-use, re-purpose, adaptation and redistribution by others."
The Creative Commons has gathered a number of definitions of OER from different organizations.
When an author or creator amends their Copyright with a Creative Commons license, they are giving you permission to reuse their work in the following ways:
This material is based on original writing by David Wiley, which was published freely under a Creative Commons Attribution 4.0 license at: Defining the "Open" in Open Content and Open Educational Resources.
Creative Commons licenses provide a standardized way for authors and creators to grant the public permission to share and use their creative works. Creative Commons licenses mix and match the following elements:
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