Devi KS. Constructivist Approach to Learning based on the Concepts of Jean Piaget and Lev Vygotsky An Analytical Overview. jie [Internet]. 2019 Feb. 28 [cited 2025 Apr. 28];44(4):p. 5-19. Available from: http://14.139.250.109:8090/index.php/jie/article/view/2553