How you can use an Open Educational Resource (OER) depends on what legal restrictions have been removed. These restrictions are removed by whoever holds the property rights to the resource via a license.
There are many different licenses that can be used to do this, including the “University of Maine System Broad Application Copyleft License,” but the most popular are the Creative Commons Licenses. The Creative Commons Licenses describe a set of six licenses that can be used globally to mange the lifting of copyright restrictions.
Creative Commons provides six different internationally compatible licenses:
Given OERs encompass a broad range of materials, they can be employed in the classroom in a variety of ways, for example:
If you wish to embrace an open approach on a more robust scale, consider developing open materials with learners. This approach is a main feature of open pedagogy. See this video for an example in brief from Robin DeRosa