
Using open material
Open (teaching) materials are mostly shared under a Creative Commons (CC) license.
Open material uses the Creative Commons licenses 'CC BY' or 'CC BY-SA'. These licenses give you free and perpetual permission to do the following 5R activities:
- Retain - the right to make, own, and control copies of the content (e.g., download, duplicate, store, and manage)
- Reuse - the right to use the content in different ways (e.g., in a class, in a study group, in a video, on a website)
- Revise - the right to adapt, adjust, modify, or alter the content itself (e.g., translate the content into another language)
- Remix - the right to combine the original or revised content with other material to create something new (e.g., incorporate the content into a mashup)
- Redistribute - the right to share copies of the original content, your revisions, or your remixes with others (e.g., give a copy of the content to a friend)
The 5R activities let you use Open Educational Resources on several levels:

- Discovering the Open Educational Resources of others may inspire you in creating your educational materials.
- The open license gives you the possibility to use other teachers' creations in your classes or courses.
- You can use just a part of the resource or revise it to create materials for your students. You might also want to mix several sources and create a new product.
- You might want to share your materials with others, thus redistributing them.
You may not revise or remix materials with a ‘CC BY-ND’ or ‘CC BY-NC’ license. These materials must be reused ‘as is’.
Source: This material is an adaptation of Defining the "Open" in Open Content and Open Educational Resources, which was originally written by David Wiley and published freely under a Creative Commons Attribution 4.0 license at http://opencontent.org/definition/.