The OER Metafinder performs a simultaneous search across 19 different sources of open educational materials. Because it is a real-time, federated search, it can take a bit longer than searches of pre-indexed, curated content; however, as compensation the results returned are absolutely up-to-the-minute for each search target. Additional results will continue to trickle in as the search continues running and you begin examining your results.
OER Commons is a public digital library of open educational resources. Explore, create, and collaborate with educators around the world to improve curriculum. For extra search tips, check out the Finding OER Materials module.