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Open Access(OA) & OER
No matter how easy it is to access and/or use a work, you still need to give credit to the author, through attribution or citation.
"Open Educational Resources are teaching and learning materials that you may freely use and reuse, without charge. OER often have a Creative Commons or GNU license that state specifically how the material may be used, reused, adapted, and shared."
"Open Educational Resources (OER) are learning objects (tutorials, syllabi, worksheets, interactive experiences, lesson plans, blogs, etc.) shared under an intellectual property license that enables others to reuse, revise, remix, retain, and redistribute them" (Wiley, 2014).
Ideally, Open Educational resources are:
An object used for teaching and learning
Shared under a license that enables others to reuse, revise, remix, retain, and redistribute
Shared in a format and with enough context for others to reasonably alter the object.
Since some states have invested in education, they have funded the creation of OER textbooks, which the rest of us depend on for providing Free Textbooks. The goal is to use open resources, get comfortable, then start creating and sharing your own open works.