2023. 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. 12, 4 (Jun. 2023), 945–956. DOI:https://doi.org/10.33578/jpfkip.v12i4.9785.