THE EFFECTIVENESS OF THE HEAT AND ITS TRANSFER E-MODULE BASED ON PROBLEM-BASED LEARNING TO IMPROVE STUDENTS’ PROBLEM-SOLVING SKILLS. SPEKTRA: Jurnal Kajian Pendidikan Sains, [S. l.], v. 11, n. 2, p. 270–281, 2025. DOI: 10.32699/spektra.v11i2.9882. Disponível em: https://ojs.unsiq.ac.id/index.php/spektra/article/view/9882. Acesso em: 27 nov. 2025.