PENINGKATAN PRESTASI BELAJAR MATEMATIKA MATERI PERKALIAN MELALUI MEDIA ABAKUS BAGI SISWA TUNANETRA . Jurnal Orthopaedagogia, [S. l.], v. 1, n. 01, p. 27–35, 2013. Disponível em: https://journal.uns.ac.id/index.php/orthopaedagogia/article/view/1167. Acesso em: 30 oct. 2024.