URBAN, M.; MURAUYOVA, H.; GADZAOVA, S. Didactic Principles of Visualization of Mathematical Concepts in Primary Education. Pedagogika / Pedagogy, [S. l.], v. 127, n. 3, p. 70–86, 2017. DOI: 10.15823/p.2017.40. Disponível em: https://ejournals.vdu.lt/index.php/Pedagogika/article/view/629. Acesso em: 19 apr. 2025.