Sugiatno S. Konsepsi Siswa Mengenai Operasi Hitung Bilangan Bulat Di Kelas V Sekolah Dasar. JPD [Internet]. 2013 Jun. 19 [cited 2025 Aug. 3];1(1):45-77. Available from: https://www.jurnalstkipmelawi.ac.id/index.php/JPD/article/view/61