1. Ludwigsburg University of Education, Department of Chemistry and Chemistry Education, Reuteallee 46, 71634 Ludwigsburg, Germany
2. University of Ljubljana, Faculty of Education, Department of Biology, Chemistry and Home Economics, Kardeljeva pl. 16,1000 Ljubljana, Slovenia
3. University of Strathclyde, Department of Chemistry and Chemistry Education, Richmond St 16, G1 1XQ Glasgow, U.K.
4. University of Limerick, SSPC, The SFI Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, Sreelane, Castletroy, Limerick, V94 T9PX, Ireland
5. Ss. Cyril and Methodius University of Skopje, Faculty of Natural Sciences and Mathematics, Boulevard Goce Delchev 9, Skopje 1000, North Macedonia
6. The Weizmann Institute of Science, Department of Science Teaching, Herzl St 234, 76100 Rehovot, Israel
7. Ludwig Maximilian University of Munich, Department of Chemistry, Butenandtstr. 5-13, 83177 Munich, Germany