ANALISIS PENGARUH  MODEL PROBLEM BASED LEARNING (PBL) TERHADAP PENINGKATAN PEMAHAMAN IPAS KELAS IV SEKOLAH DASAR. sindoro [Internet]. 2025 May 31 [cited 2025 Jul. 8];14(12):131-40. Available from: https://ejournal.cahayailmubangsa.institute/index.php/sindoro/article/view/837