PASARIBU, Zahara Febriyanti; RAHMAT, Tasnim; ILTAVIA, Iltavia; WIZSA, Uqwatul Alma. The Influence of the Problem Solving Learning Model on Students’ Self-Confidence and Learning Outcomes in Mathematics Learning. Polyhedron International Journal in Mathematics Education, [S. l.], v. 4, n. 1, p. 1–15, 2026. DOI: 10.59965/pijme.v4i1.288. Disponível em: https://nakiscience.com/index.php/pijme/article/view/288. Acesso em: 13 jun. 2026.