“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 ” (2023) Primary: Jurnal Pendidikan Guru Sekolah Dasar, 12(4), pp. 945–956. doi:10.33578/jpfkip.v12i4.9785.