This book gives an overview of the state-of-the-art in Technology Enhanced Learning (TEL). It is organized as a collection of 14 research themes, each introduced by leading experts and including references to the most relevant literature on the theme of each cluster. Additionally, each chapter discusses four seminal papers on the theme with expert commentaries and updates. This volume is of high value to people entering the field of learning with technology, to doctoral students and researchers exploring the breadth of TEL, and to experienced researchers wanting to keep up with latest developments. This book contains the following chapters: (1) Research Themes in Technology Enhanced Learning (Erik Duval, Mike Sharples, and Rosamund Sutherland); (2) Technology and Theories of Learning (Charles Crook and Rosamund Sutherland); (3) Constructionism and Microworlds (Richard Noss and Celia Hoyles); (4) Design Methods for TEL (Susan McKenney and Yael Kali); (5) Computer-Supported Collaborative Learning (Sten Ludvigsen and Hans Christian Arnseth); (6) Mass Collaboration with Social Software in TEL (Ulrike Cress and Gerhard Fischer); (7) Learning Spaces (Brett Bligh and Charles Crook); (8) Mobile Learning (Mike Sharples and Daniel Spikol); (9) Virtual Worlds for Learning (Maggi Savin-Baden, Liz Falconer, Katherine Wimpenny, and Michael Callaghan); (10) Adaptive Intelligent Learning Environments (Eelco Herder, Sergey Sosnovsky, and Vania Dimitrova); (11) Self-Regulated Learning in Technology Enhanced Learning Environments (Donatella Persico and Karl Steffens); (12) Assessment for Learning (Carlo Perrotta and Denise Whitelock); (13) Learning Objects (Tom Boyle and Erik Duval); (14) Technical Learning Infrastructure, Interoperability and Standards (Xavier Ochoa and Stefaan Ternier); and (15) Digital Divides and Social Justice in Technology-Enhanced Learning (Lyndsay Grant and Rebecca Eynon).