"DiscoverEd is an experimental project from ccLearn which attempts to provide scalable search and discovery for educational resources on the web. Metadata, including the license and subject information available, are exposed in the result set. We are particularly interested in open educational resources (OER) and are collaborating with other OER projects to improve search and discovery capabilities for OER, using DiscoverEd and other available tools. Contact us if you are interested in this work. DiscoverEd is a prototype intended to explore how structured data may be used to enhance the search experience; there are a number of known issues. Read our white paper that describes the rationale for and design of DiscoverEd, as well as our thoughts regarding possible future enhancements that could make the tool, or other search tools like it, even more compelling. DiscoverEd is also being discussed among participants of the OER search and discovery community. You can also find slides on Slideshare about DiscoverEd. If you are aware of any related resources, please post them to the OpenEd community site, and we will cross-post them to this FAQ as we can. Where do the results come from? Results come from institutional and third party repositories who have expended time and resources curating the metadata. These curators either create or aggregate educational resources and maintain information about them."Source page...
http://discovered.creativecommons.org/search/