An OER is licensed such that it gives users permission to:
From David Wiley
OER-enabled pedagogy uses openly-licensed materials to allow students to engage differently with learning materials.
Take five minutes with others nearby (or on your own) and come up with an open assignment that you could incorporate in your teaching. Keep it simple! Report out to the group. Zoom participants, share via chat!
Go to: https://researchbysubject.bucknell.edu/openpedagogy
Scroll down to "The Fun Part!"