MUHAMMAD HARIS ADIANTO. Peningkatan Hasil Belajar Matematika Materi Bilangan Bulat Berbantuan Alat Peraga OBIBUL Siswa Kelas VI. Prosiding Seminar Nasional Pendidikan Profesi Guru, [S. l.], v. 1, n. 2, p. 2314–2320, 2023. Disponível em: https://conference.upgris.ac.id/index.php/psnppg/article/view/5384. Acesso em: 15 apr. 2025.