64 Nizozemsko Martina Meelissen Department of Research Methodology, Measurement and Data Analysis, U. of Twente Alfons ten Brummelhuis Kennisnet Norsko Inger Throndsen Department of Teacher Education and School Research, University of Oslo Geir Ottestad Norwegian Center for ICT in Education Polsko Kamil Sijko The Educational Research Institute (IBE) Ruská federace Svetlana Avdeeva Center for International Co-operation in Education Development