“IMPROVING CRITICAL THINKING ABILITY BY USING THE PROBLEM-BASED LEARNING MODEL”. Primary: Jurnal Pendidikan Guru Sekolah Dasar 9, no. 2 (April 23, 2020): 173–184. Accessed December 15, 2025. https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/886.