MOOCs are often associated with Open Educational Resources as they are theoretically focusing on Open Education.
The main feature of Open Educational Resources is their open licenses, allowing for the possibility of use and reuse.
So, though MOOCs are offered with open education access and are mainly free, in most cases their contents are not necessarily released with open licences, hence making a key distinction from Open Educational Resources (OER)
So in essence, the key differences between OERs and MOOCs are:
OER
MOOC's
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