EFFORTS TO ENHANCE CRITICAL THINKING SKILLS AND ATTITUDES TOWARD SCIENCE THROUGH THE PROBLEM-BASED LEARNING MODEL. SPEKTRA: Jurnal Kajian Pendidikan Sains, [S. l.], v. 12, n. 1, p. 223–235, 2026. DOI: 10.32699/63vef061. Disponível em: https://ojs.unsiq.ac.id/index.php/spektra/article/view/10602. Acesso em: 12 jun. 2026.