زمرد أ. ., يوسف س. . ., & عيسى م. . (2021). Basic Thinking Skills Included in the science curriculum’s content for the first and second grades of basic education in the Syrian Arab Republic. Tishreen University Journal- Arts and Humanities Sciences Series, 43(1). Retrieved from https://journal.tishreen.edu.sy/index.php/humlitr/article/view/10375