OERs are educational resources--textbooks, instructional modules, simulations, multimedia applications--that are freely available for use, reuse, adaptation, and sharing. They are usually released under a Creative Commons or similar license that supports open or nearly open use of the content. OERs expand access to high-quality instructional resources in formal and informal learning environments and can drive innovation to support and enhance teaching. Educators can endorse, adopt, and improve OERs, resulting in instructional materials and resources that embody what the educational community deems most valuable. Learners can access OERs to direct their own learning. The presenters will introduce and review the OER movement, and highlight several OER initiatives--such as MIT's OpenCourseWare project, the Open University's Open Learn, and Open Learning: Bridge to Success. Presented by Brandon Muramatsu and Jean Runyon at eLearning 2012 in Long Beach, CA.