HAZIM JASIM, R.; IBRAHIM .FARIS, H.; OMRAN . RASHEED, R.; YOUNIS DARWEESH, S. Difficulties in Solving Mathematical Problems that First Graders Face in Mathematics, from their Point of View. College of Basic Education Research Journal, [S. l.], v. 17, n. 1, p. 97–124, 2021. DOI: 10.33899/berj.2021.167718. Disponível em: https://moss.uomosul.edu.iq/index.php/berj/article/view/39051. Acesso em: 26 oct. 2025.