Yetmawarni Y. Upaya Peningkatan Hasil Belajar IPS Melalui Model Pembelajaran Problem Based Learning Kelas IV SD Negeri 27 Salibawan Kecamatan Lubuk Sikaping Kabupaten Pasaman. edp [Internet]. 2023 Dec. 29 [cited 2026 Oct. 10];1(1):36-42. Available from: https://edp.web.id/index.php/edp/article/view/12