POLLAK, A.; WIJATA, A. M.; BIEŃKOWSKA, M. J.; MITAS, A. W. Proposition of validation of EduMATRIX as the educational tool for supporting the teaching process of mathematics in early education classes. Journal of Education, Technology and Computer Science, [S. l.], v. 18, n. 4, p. 325–331, 2016. DOI: 10.15584/eti.2016.4.42. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6233. Acesso em: 22 jul. 2024.