As previously noted, OER are basically anything you can utilize in a course that are open to use - from full courses to textbooks, from individual modules to media components. Unfortunately, there isn't a single tool that harvests everything for us, so below are some general resources that you can use to help identify OER materials.
|TEXTBOOKS||COURSE OUTLINES & MODULES||MEDIA & OTHER RESOURCES|
|California Open Education Resources Council Showcase||Serendipity||CreativeCommons|
|University of MN Open Textbooks||EdX||Wiley Journals|
|Open SUNY||MIT OCW||Springer Open Journals|
|BC Campus||Lumen Learning||TEDTalks|
|Directory of Open Access Books||OER Commons||Crash Course|
|Saylor Academy||Saylor Course Resource Guides|