Simasir S. Improving Civics Learning Outcomes through the Implementation of Problem Based Learning (PBL) Students (Case Study at Class V Public Elementary School 3 South Tiworo in 2018/2019 Academic Year. IJMEHD [Internet]. 2021 Mar. 31 [cited 2025 Sep. 5];1(01):136-47. Available from: https://ijmehd.com/index.php/ijmehd/article/view/141