YELIZ YAZGAN. Observations about fourth and fifth grade students’ strategies to solve non-routine problems . Elementary Education Online, [S. l.], v. 6, n. 2, p. 249–263, 2023. Disponível em: https://ilkogretim-online.org./index.php/pub/article/view/305. Acesso em: 10 mar. 2025.