Institution: | 1. Department of Physics and Electrical Engineering, Karlstad University, Universitetsgatan 2, SE-651 88, Karlstad, Sweden 4. Department of Mathematics and Science Education, Stockholm University, Svante Arrhenius v?g 20 A, 106 91, Stockholm, Sweden 2. Department of Physics and Astronomy, Uppsala University, Regementsv?gen 1, SE-752 37, Uppsala, Sweden 5. Department of Physics, University of the Western Cape, Cape Town, South Africa 3. Faculty of Education, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6
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