SIMAMORA, Dervina; SITEPU, Anton; SILABAN, Patri. UPAYA MENINGKATKAN HASIL BELAJAR SISWA DENGAN MENGGUNAKAN MODEL PEMBELAJARAN DOUBLE LOOP PROBLEM SOLVING . Jurnal Educatio FKIP UNMA, [S. l.], v. 6, n. 2, p. 288–293, 2020. DOI: 10.31949/educatio.v6i2.447. Disponível em: https://ejournal.unma.ac.id/index.php/educatio/article/view/447. Acesso em: 27 jun. 2025.