Open Educational Resources are freely accessible open access licensed materials for teaching, learning and researching purposes. OER arises as a part of the open access movement to meet the demand of free and customizable educational material for schools and universities.

Information and links to OER materials are deposited at the Federal Agency for Civic Education. The search engine for educational materials  ELEXIER allows to browse through specific subjects. The webpage ZUM.de provides teaching material, projects and ideas.