NIKEN, . B. U. APPLICATION OF PROBLEM BASED LEARNING LEARNING MODELS TO IMPROVE MATHEMATICAL LEARNING RESULTS AND CRITICAL STUDENTS. FITRAH: International Islamic Education Journal, [S. l.], v. 1, n. 1, 2019. DOI: 10.22373/fitrah.v1i1.32. Disponível em: https://journal.ar-raniry.ac.id/fitrah/article/view/32. Acesso em: 22 dec. 2024.