User:Shubhamshinde0629/sandbox

open educational resources(OER) open educational resources are teaching, learning and research materials in any medium digital or otherwise that reside in the public domain or have been released under an open licenses. that permits no cost access, use, adaptation and redistribution with others no or limited restrictions. open educational resources are include in both digital and non digital resources that permits 5R activities. it list of several types of use that permits 5R activity 5R activity/permissions proposed by david villey which include 1) retain 2) reuse 3) remix 4) revise 5) redistribution