HAIKAL, Fikry. Penerapan Model Pembelajaran Problem Based Learning (PBL) Untuk Meningkatkan Hasil Belajar Matematika Siswa Kelas 1 SD. Global Journal Teaching Professional, [S. l.], v. 2, n. 4, p. 97–107, 2023. DOI: 10.35458/jtp.v2i4.1078. Disponível em: https://jurnal.sainsglobal.com/index.php/gpp/article/view/1078. Acesso em: 9 may. 2026.