What are OER?
Open Educational Resources are
"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" (see Paris Declaration on OER 2012).
Open Educational Resources therefore are free educational resources that are made available for free use, editing and redistribution. Their further use is regulated by licensing models, such as Creative Commons licenses.
At the first UNESCO World Congress on Open Educational Resources in 2012 with 400 experts, the "Paris Declaration" on OER was adopted.
