Simamora P, Rotua Estomihi Pardede V. THE APLICATION OF PROBLEM BASED LEARNING MODEL ON HEAT AND TEMPERATURE. JPF Unimed [Internet]. 2016 Dec. 1 [cited 2025 Jul. 19];5(2):64-8. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/4399