THE EFFECT OF PROBLEM BASED LEARNING MODEL AND DISCOVERY LEARNING TOWARD PROBLEM SOLVING SKILLS IN MATHEMATIC OF GRADE 5 ELEMENTARY. Primary: Jurnal Pendidikan Guru Sekolah Dasar, [S. l.], v. 9, n. 2, p. 250–257, 2020. DOI: 10.33578/jpfkip.v9i2.7890. Disponível em: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/894. Acesso em: 21 dec. 2025.