Sugiatno, Sugiatno. “Konsepsi Siswa Mengenai Operasi Hitung Bilangan Bulat Di Kelas V Sekolah Dasar”. JURNAL PENDIDIKAN DASAR 1, no. 1 (June 19, 2013): 45–77. Accessed July 30, 2025. https://jurnalstkipmelawi.ac.id/index.php/JPD/article/view/61.