“METHODOLOGY FOR DEVELOPING STUDENTS’ LEARNING AND COGNITIVE ACTIVITY BASED ON THE PORTFOLIO APPROACH”, Wor. Bul. of Edu. and Lea., vol. 1, no. 02, pp. 212–225, Nov. 2025, Accessed: May 08, 2026. [Online]. Available: https://worldbulletin.org/index.php/1/article/view/98