SURATMI, Suratmi. Peningkatan Hasil Belajar Matematika Siswa Kelas VI SDN 013 Sukamaju Menggunakan Model Numbered Heads Together pada Materi Bilangan Bulat. Indo Green Journal , [S. l.], v. 2, n. 1, p. 55 – 63, 2024. DOI: 10.31004/green.v2i1.48. Disponível em: https://idngreen.com/index.php/green/article/view/48. Acesso em: 8 oct. 2026.