PIWOWARSKA, E. Ability to observe and draw solid figures by children and their mathematical skills. Journal of Education, Technology and Computer Science, [S. l.], v. 18, n. 4, p. 90–95, 2016. DOI: 10.15584/eti.2016.4.10. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6201. Acesso em: 22 jul. 2024.