THE EFFECT OF PBL LEARNING MODEL ON THE FIFTH-GRADE STUDENTS’ MATH ARITHMETICAL SKILLS AT MIS PERDAMEAN SIGAMBAL. Primary: Jurnal Pendidikan Guru Sekolah Dasar, [S. l.], v. 12, n. 2, p. 293–305, 2023. DOI: 10.33578/jpfkip.v12i2.9364. Disponível em: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/286. Acesso em: 21 dec. 2025.