Sukma Dwi Anggraini, and Wahyu Susiloningsih. 2024. “THE EFFECT OF PROBLEM-BASED LEARNING MODEL ON HIGHER ORDER THINKING SKILLS IN CLASS IV ELEMENTARY SCHOOL SCIENCE LEARNING”. JOURNAL OF HUMANITIES AND SOCIAL STUDIES 2 (03):1052-59. https://humasjournal.my.id/index.php/HJ/article/view/367.