Aswan Simanjuntak, Hidayat. Efforts to Improve Student Activities and Results in Integrated Learning Using the Problem Based Model Learning at SDN 060924 District Sanding Field. IJERE [Internet]. 2023 Jul. 31 [cited 2024 Jul. 3];2(2):226-34. Available from: https://ejournal.ipinternasional.com/index.php/ijere/article/view/481