Why Open Education Matters by David Blake is licensed under a CC by 3.0.
Section 67423 of the California Education Code defines Open Educational Resources (OER) as
"high-quality teaching, learning and research resources that:
Reside in the public domain or
Have been released under an intellectual property license, such as the Creative Commons license, that permits their free use and repurposing by others, and
May include other resources that are legally available and free of cost to students.
Open educational resources include, but are not limited to, full courses, course materials, modules, textbooks, streaming videos, tests, software, and any other tools, materials, or techniques used to support access to knowledge."
OER does not simply mean the content is freely accessible online. Instead, it is content that has been given certain permissions for its use or is formally in the public domain.
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 (1) in the public domain or (2) licensed in a manner that provides everyone with free and perpetual permission to engage in the 5R activities:
Here is an example of an attribution (in lieu of a formal citation) that is used for OER content (some of which is being used for this page):
This material is based on original writing by David Wiley, which was published freely under a Creative Commons Attribution 4.0 license at: Defining the "Open" in Open Content and Open Educational Resources.
Between 2008 and 2016 the cost of college textbooks has risen 88% (Bureau of Labor Statistics), and the College Board estimates that full-time students in 2-year colleges will spend as much as $1,420 per year (2017-18) on textbooks. Struggling students and their families are increasingly forced to make hard choices about whether to purchase required course materials that they cannot afford or attempt to pass their courses without them. Though students are the ones that have to pay for course textbooks, they may have very little ability to influence the textbook market. Only faculty members have the power to determine the amount of money students will have to spend on their course materials.
Open Textbooks...