K. S. . Devi, “Constructivist Approach to Learning based on the Concepts of Jean Piaget and Lev Vygotsky An Analytical Overview”, jie, vol. 44, no. 4, pp. p. 5–19, Feb. 2019, Accessed: Apr. 28, 2025. [Online]. Available: http://14.139.250.109:8090/index.php/jie/article/view/2553