Research Themes in Technology Enhanced Learning -- Technology and Theories of Learning -- Constructionism and Microworlds -- Design Methods for TEL -- Computer-Supported Collaborative Learning -- Mass Collaboration with Social Software in TEL -- Learning Spaces -- Mobile Learning -- Virtual Worlds for Learning -- Adaptive Intelligent Learning Environments -- Self-Regulated Learning in Technology Enhanced Learning Environments -- Assessment for Learning -- Learning Objects -- Technical Learning Infrastructure, Interoperability and Standards -- Digital Divides and Social Justice in Technology-Enhanced Learning -- Selected papers -- Index.