PASARIBU, A. P.; SOFNIDAR; IRIANI, D. The Effect of Gobak Sodor Based Outdoor Learning on Seventh Grade Students Collaborative Character In Algebra. Jurnal Pendidikan Matematika (JPM), [S. l.], v. 12, n. 1, p. 01–13, 2026. DOI: 10.33474/jpm.v12i1.24984. Disponível em: https://riset.unisma.ac.id/index.php/jpm/article/view/24984. Acesso em: 23 jul. 2026.