OPEN EDUCATIONAL RESOURCES(OER)

OER are teaching,learning and research materials in any medium that reside in the public domain and have been released under an OPEN licence that permits access ,use, repurposing, reuse and redistribution by others with no limited restrictions.
               Some initiatives of OER are:

1.           MIT OPENCOURSEWARE
2.           CHINA OPEN RESOURCES FOR EDUCATION 
3.           OPEN EDUCATION RESOURCE FOUNDATION
4.           WIKIEDUCATOR
5.           CURRIKI
6.           OER COMMOMS
7.           YOU TUBE EDUCATION CHANNELS
8.           KHAN ACADEMY RESOURCES