UNESCO defines Open Educational Resources (OER) as, "teaching, learning and research materials in any medium – digital or otherwise – that reside in the public domain or have been released under an open license that permits no-cost access, use, adaptation and redistribution by others with no or limited restrictions." The term "open" in OER generally refers to resources with free permission to engage in the 5R activities: retain, reuse, revise, remix, and redistribute.
The Creative Commons (CC) organization developed licenses and public domain tools to give creators a free, simple, and standardized way to grant copyright permissions for creative and academic works. CC also:
Creative Commons Certificate for Educators and for Librarians: A stand-alone PressBooks port of the Creative Commons Certificate Course. Includes H5P formative assessments for readers to monitor their own progress. Created by Jonathan Poritz.
OER Starter Kit: This starter kit has been created to provide instructors with an introduction to the use and creation of open educational resources (OER). The text is broken into five sections: Getting Started, Copyright, Finding OER, Teaching with OER, and Creating OER. Although some chapters contain more advanced content, the starter kit is primarily intended for users who are entirely new to Open Education. By Abbey Elder at Iowa State University.