SARI SIREGAR, R. IMPROVEMENT OF COMMUNICATION SKILLS AND MATHEMATICAL DISPOSITION OF STUDENTS GIVEN A MODEL PROBLEM BASED LEARNING AND DISCOVERY. Nusantara Hasana Journal, [S. l.], v. 2, n. 2, p. 204–214, 2022. Disponível em: https://nusantarahasanajournal.com/index.php/nhj/article/view/377. Acesso em: 29 nov. 2024.