The document discusses open educational resources (OERs) and Creative Commons licenses. It defines OERs as teaching, learning, and research materials that reside in the public domain or have been released under an open license that allows free use, repurposing, and redistribution. Examples of OERs include full courses, course materials, modules, textbooks, videos, and other educationally useful materials. The document notes that the MIT OpenCourseWare project, which began publishing courses for free in 2001, was an early major initiative in the OER movement. It also discusses the role of Creative Commons licenses in strengthening the legal protection of open content and increasing its credibility.