SÕRMUS, M.; RADIŠIĆ, J.; LEIJEN, Äli; UIBU, K. Learning motivation in the context of mathematics among 6-13-year-old students: A systematic literature review of concepts and instruments. Eesti Haridusteaduste Ajakiri. Estonian Journal of Education, [S. l.], v. 14, n. 1, p. 139–166, 2026. DOI: 10.12697/eha.2026.14.1.06. Disponível em: https://ojs.utlib.ee/index.php/EHA/article/view/26745. Acesso em: 27 apr. 2026.