Preparing teachers in grades K-6 to help young pupils learn physics: toward a common research agenda - Vokos, S.; Corni, F.; Vidic, E.; Maurizio, R.; Michelini, M.; Kapanadze, M.; Lopez-Gay, R.; Martinez-Chico, M.; Jimenez-Liso, M. R.; Castillo, F. J.; Spyrtou, A.; Chaitidou, M.; et al. (GIREP-ICPE-EPEC-MPTL 2019, 2021)