NASSOUR, R. .; GHOSOUN, S. . . The Effectiveness of an educational program based on the activities of mathematics in the educational achievement of pupils in the third grade. (Semi-experimental study in the city of Latakia). Tishreen University Journal- Arts and Humanities Sciences Series, [S. l.], v. 39, n. 5, 2017. Disponível em: https://journal.tishreen.edu.sy/index.php/humlitr/article/view/3332. Acesso em: 3 may. 2024.