Hannula, M. S., Haataja, E., Laine, A., Portaankorva-Koivisto, P. and Moreno-Esteva, E. G. (2019) “Editorial”, LUMAT: International Journal on Math, Science and Technology Education, 7(2), pp. 5–8. doi: 10.31129/LUMAT.7.2.426.