“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 ”, JPFKIP, vol. 12, no. 4, pp. 945–956, Jun. 2023, doi: 10.33578/jpfkip.v12i4.9785.