ŽAKELJ, Amalija; ŠTEMBERGER, Tina; KLANČAR, Andreja. An Empirical Study on Basic and Conceptual Knowledge, Procedural Knowledge and Problem Solving among Primary School Students. International Journal of Instruction, [S. l.], v. 18, n. 4, p. 627–650, 2025. Disponível em: https://e-iji.net/ats/index.php/pub/article/view/837. Acesso em: 3 oct. 2025.