"Open Educational Resources are 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 William and Flora Hewlett Foundation
Examples of OER
Types of OER include (but are not limited to) textbooks, journal articles, syllabi, podcasts, lesson plans, learning modules, lab experiments, simulations, course videos, discussion prompts, assignments, assessments, library guides, and course design templates. In short, OER are teaching, learning and research resources that reside in the public domain or have been released under an intellectual property license that permits their free use and re-purposing by others
OER for Instructors
Instructors use OER in their classes: — showing YouTube videos, using worksheets created and shared by other instructors, and using online simulations as learning activities. Instructors can also create and share syllabi, lesson plans, and even full textbooks for their courses. They can collaborate with instructors at their own institutions, or other institutions around the world. They can access and remix existing OER and republish them to share with others.
Adapted from the Open Educational Resources (OER): Tools for Affordable Learning, Washington State University LibGuide.
"The terms 'Open Content' and 'Open Educational Resources' describe any copyrightable work (traditionally excluding software, which is described by other terms like 'Open Source') that is either in the public domain or licensed in a manner that provides users with free and perpetual permission to engage in the following 5R activities":
Characteristics of a good OER
Adpated from: The Open University. OpenLearn. Creating open educational resources. What makes a good OER?
Google Scholar provides link to scholarly articles related to a wide array of disciplines.