“...teaching, learning, and research materials that are either (a) in the public domain or (b) licensed in a manner that provides everyone with free and perpetual permission to engage in the 5R activities....”
OER, Open Textbooks, and Open Courses https://certificates.creativecommons.org/cccertedu/chapter/6-2-oer-open-textbooks-open-courses. by Creative Commons. CC BY 4.0
Retain | make, own, control copies of content |
Reuse | use in a variety of ways |
Revise | adjust, adapt or change content |
Remix | combine different content to create something new |
Redistribute | share copies, revisions, or remixes with others |