Open Educational Resources (OER) are freely accessible digital materials that are available for reuse in education.
If you are looking for information for your (graduation) assignment, you will probably benefit from searching for:
Open Access Publications: These are online publications, both journals and books, to which there are no financial, legal or technical barriers to access and whose content can be read, downloaded, shared and printed by anyone.
Open Data: This is research data that is made openly available to researchers to enable them to build upon previous research.
Weblectures: These are video recordings of instructions, workshops or lectures. These recordings may be supplemented with presentations, websites or publications.
Open Courseware: These are complete courses consisting of a compiled set of open educational resources that may be reused under certain conditions via a licence.
Open Textbooks: These are free online textbooks with an open licence that allows users to modify the content in their own copy. Open textbooks often contain links to other educational materials, have embedded videos and refer to interactive elements such as simulations and animations.
You can search for Open Educational Resources via this link.
