Ervita E, Tellu AT, Masrianih M. The Effect of Problem Solving Models on Concept Mastery and Student Learning Outcomes about Biology in Junior High Schools. J. Riset Pend. MIPA [Internet]. 2022Dec.30 [cited 2024Nov.21];6(2):88-97. Available from: https://new.jurnal.untad.ac.id/index.php/jrpm/article/view/210