1. Illinois Institute of Technology, Chicago, USA
2. Valparaiso University, Valparaiso, USA
3. University of Talca, Linares, Chile
4. Illinois Institute of Technology, Chicago, USA
5. Universidad de Tarapacá, Chile, South America
6. Malmö University, Malmö, Sweden
7. Indiana University, Bloomington, USA
8. Universidade Estadual de Londrina, Londrina, Brazil
9. University of Groningen, Groningen, Netherlands
10. Bath Spa University, Bath, UK
11. Université de Bordeaux, Bordeaux, France
12. American University of Beirut, Beirut, Lebanon
13. Pontificia Universidad Católica del Perú, Lima, Peru
14. Khon Kaen University, Khon Kaen, Thailand
15. Northwest Regional Professional Development Program, Nevada, USA
16. University of Nevada, Nevada, USA
17. Darla Middle Secondary School, Tala, Bhutan
18. Marmara University, Istanbul, Turkey
19. University of Plovdiv, Plovdiv, Bulgaria
20. Ritsumeikan Junior and High School, Tsukuba, Japan
21. Hebei Normal University, Shijiazhuang, China
22. Universidad de Sevilla, Sevilla, Spain
23. The University of Akron, Ohio, USA
24. Zhejiang Normal University, Jinhua, China
25. University of Ioannina, Ioannina, Greece
26. University of Helsinki, Helsinki, Finland
27. The University of Hong Kong, Hong Kong, China
28. Northeast Normal University, Changchun, China
29. University of North Texas, Denton, USA
30. Beijing Normal University, Beijing, China
31. National Taiwan Normal University, Taipei, Taiwan, Province of China
32. The University of Queensland, Queensland, Australia
33. Leibniz-Institute for Science and Mathematics Education, Kiel, Kiel, Germany
34. Ewha Womans University, Seoul, Korea, Democratic People's Republic
35. University of Johannesburg, Johannesburg, South Africa
36. Institut de Physique de Nice (INPHYNI), Nice, France
37. University of the Basque Country (UPV/EHU), Basque, Spain
38. Stockholm University, Stockholm, Sweden
39. The Children's Guild School of Prince George´s County, Maryland, USA
40. Jining N°1 High School, Jining, China
41. Nanyang Technological University, Singapore, Singapore
42. Universidad de Burgos, Burgos, Spain
43. Gothenburg University, Gothenburg, Sweden
44. The University of Queensland, St Lucia, Australia
45. Leibniz University Hannover, Hannover, Germany
46. Hacettepe University, Ankara, Turkey
47. Dongyang Second Experimental Primary School, Dongyang, China