THE EFFECT OF PROBLEM-BASED LEARNING MODEL ON THE IMPROVEMENT OF STUDENTS’ CRITICAL THINKING AND LEARNING OUTCOMES IN SOCIAL SCIENCE LEARNING SUBJECT IN CLASS 5A OF SD KRISTEN 03 EBEN HAEZER SALATIGA . Primary: Jurnal Pendidikan Guru Sekolah Dasar, [S. l.], v. 12, n. 4, p. 945–956, 2023. DOI: 10.33578/jpfkip.v12i4.9785. Disponível em: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/301. Acesso em: 16 dec. 2025.