Sundas Majeed, Mubashra Tayyaba, Zeshan Haider, Saqib Raza. EFFECT OF PROBLEM-BASED LEARNING ON STUDENTS’ METACOGNITION AND ACADEMIC ACHIEVEMENT IN SECONDARY LEVEL CHEMISTRY. IJCISS [Internet]. 2024 Jun. 30 [cited 2024 Nov. 21];3(2):3515-9. Available from: https://ijciss.org/index.php/ijciss/article/view/1117