APPLICATION OF PROBLEM BASED LEARNING LEARNING MODELS TO IMPROVE MATHEMATICAL LEARNING RESULTS AND CRITICAL STUDENTS. PIONIR: JURNAL PENDIDIKAN, [S. l.], v. 8, n. 1, 2019. DOI: 10.22373/pjp.v8i1.5048. Disponível em: https://jurnal.ar-raniry.ac.id/index.php/Pionir/article/view/5048. Acesso em: 7 apr. 2026.