This glossary provides a structured vocabulary for open educational resources (OERs). It accompanies two works of knowledge organization systems: a. DIF V1.4 (DALIA Interchange Format), a metadata schematization that enables the integration of teaching and learning materials to the DALIA platform. Developed by the DALIA (Data Literacy Alliance) project and in the context of the German National Research Data Infrastructure (NFDI), it standardizes metadata and controlled vocabularies. b. MoDALIA, the foundational ontology for the DALIA platform's information architecture. GlossOER, MoDALIA, and DIF V1.4 maintain full compatibility. However, GlossOER additionally includes vocabulary items and usage examples not present in the other two systems.

This project was funded by the Federal Ministry of Research, Technology, and Space (BMFTR) and the funding measure from the EU's Capacity Building and Resilience Facility with the funding code 16DWWQP07.