What is OER?  

OER is the acronym for Open Educational Resources

What is the meaning of OER?

Basically, the OER movement brings together a variety of organizations committed to making freely available educational materials for students and instructors to use, adapt, share and reuse without legal ramifications.

Be sure to read the License or Attribution or Rights section before you use any resource

Foter, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons