Natasya Grabiella Sitorus, Theresia Monica Siahaan, and Asister Fernando Siagian. 2026. “PENGARUH MODEL PROBLEM BASED LEARNING (PBL) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA DI KELAS 4 SD NEGERI 122355 PEMATANGSIANTAR”. IKRA-ITH ABDIMAS 10 (3), 34-49. https://journals.upi-yai.ac.id/index.php/IKRAITH-ABDIMAS/article/view/7710.