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Fraunhofer Institut für Integrierte Publikations-und Informationssysteme IPSI
Continuous evaluation of web-based cooperative learning: The conception and development of an evaluation toolkit
An Activity-Oriented Approach to Visually Structured Knowledge Representation for Problem-Based Learning in Virtual Learning
Learning foreign languages cooperatively across the internet
PBL-protocols: Guiding and controlling problem based learning processes in virtual learning environments