Sry Tetty Simanjuntak, Hetdy Sitio, Desi Sijabat. PENGARUH PENGGUNAAN MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS IV SD NEGERI 094155 RAMBUNG MERAH. PNJ [Internet]. 2026 Jan. 12 [cited 2026 Feb. 6];4(1):45-57. Available from: https://jurnal.migascentral.com/index.php/pnj/article/view/421