Meeaad Jasim Salman Al-Sarry, Doaa Jamil Ghadban. THE EFFECT OF A PROPOSED STRATEGY BASED ON CONSTRUCTIVE LEARNING ON COGNITIVE FLEXIBILITY AND MATHEMATICAL DESIGN THINKING AMONG MIDDLE SCHOOL STUDENTS. J Arch.Egyptol [Internet]. 2020 Nov. 14 [cited 2025 Oct. 31];17(4):134-5. Available from: https://archives.palarch.nl/index.php/jae/article/view/257