Alfarhan I. The Effectiveness of Teaching Science Using Needham’s Structural Model in Developing Levels of Cognitive Depth and Critical Thinking Skills of Sixth Grade Students. Edu [Internet]. 2020 Dec. 1 [cited 2025 Dec. 4];47(4):104-23. Available from: https://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/2445