Khazzal ر. ر. The extent to which the secondary school mathematics book includes systematic thinking skills. Tasnim International Journal for Human, Social and Legal Sciences, [S. l.], v. 3, n. 2, p. 462–487, 2024. DOI: 10.56924/tasnim.9.2024/34. Disponível em: https://tasnim-lb.org/index.php/ijhs/article/view/248. Acesso em: 22 oct. 2024.