SIMBOLON, Novi Tari; WAHYUNI, Ratna. PENGEMBANGAN MODEL PEMBELAJARAN BERBASIS MASALAH DALAM MENINGKATKAN HASIL BELAJAR MAHASISWA MATEMATIKA UNIVERSITAS QUALITY BERASTAGI. JURNAL HANDAYANI PGSD FIP UNIMED, [S. l.], v. 11, n. 2, p. 127–135, 2020. DOI: 10.24114/jh.v11i2.22099. Disponível em: http://103.242.233.34/index.php/handayani/article/view/22099. Acesso em: 31 jan. 2025.