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: 28 jul. 2026.