Ola Erstad is Professor and Head of the Department of Education at the University of Oslo. He has published on issues of technology and education, particularly on media literacy and twenty-first-century skills. Øystein Gilje is Associate Professor in the Department of Teacher Education and School Research at the University of Oslo. He works in the fields of multimodal literacy and educational ethnography, and has published on technology, identity and moving images. Hans Christian Arnseth is Associate Professor in the Department of Education at the University of Oslo. He is an expert in the field of computer-supported collaborative learning, and the consequences of developments in ICT for learning and literacy. Julian Sefton-Green is Principal Research Fellow in the Department of Media and Communication at the London School of Economics and Political Science, and research associate at the University of Oslo. He has published on media education, new technologies, creativity, digital cultures and informal learning.