LUBIS, R. N. .; HAKIM, L. E. .; AZIZ, T. A. . STUDENTS’ MATHEMATICAL COMMUNICATION SKILLS REVIEWED FROM SELF-CONFIDENCE THROUGH APPROACH PROBLEM-BASED LEARNING (PBL). Tesseract: International Journal of Geometry and Applied Mathematics, [S. l.], v. 1, n. 1, p. 9–20, 2023. DOI: 10.57254/tess.v1i1.7. Disponível em: https://tesseract.nindikayla.com/index.php/home/article/view/7. Acesso em: 5 apr. 2026.