Sundas Majeed, Mubashra Tayyaba, Zeshan Haider, and Saqib Raza. “EFFECT OF PROBLEM-BASED LEARNING ON STUDENTS’ METACOGNITION AND ACADEMIC ACHIEVEMENT IN SECONDARY LEVEL CHEMISTRY”. International Journal of Contemporary Issues in Social Sciences 3, no. 2 (June 30, 2024): 3515–3519. Accessed September 16, 2024. http://ijciss.org/index.php/ijciss/article/view/1117.