KHUDHAIR, L. K. . .; JASIM, A. B. M. . . Analyzing the content of the mathematics textbook of the fifth grade preparatory according to the depth of knowledge levels. The journal of contemporary issues in business and government, [S. l.], v. 27, n. 2, p. 1337–1349, 2021. Disponível em: https://cibgp.com/au/index.php/1323-6903/article/view/1036. Acesso em: 5 jan. 2025.