Hirvi, J., Henriksson, A.-C., & Neuman, G. (2022). Teacher’s perceptions of the LUMATIKKA professional development course in relation to teachers’ professional work in the preschool context. LUMAT-B: International Journal on Math, Science and Technology Education, 7(2), 32–53. Retrieved from https://journals-21.hulib.helsinki.fi/lumatb/article/view/1803