BITO, Gregorius Sebo; SUGIMAN, Sugiman. EXPLORASI PEMBELAJARAN OPERASI PECAHAN SISWA SEKOLAH DASAR MENURUT TEORI GRAVEMEIJER DI KABUPATEN NGADA NTT. Jurnal Prima Edukasia, [S. l.], v. 1, n. 2, p. 173–183, 2013. DOI: 10.21831/jpe.v1i2.2634. Disponível em: https://journal.uny.ac.id/index.php/jpe/article/view/2634. Acesso em: 17 may. 2025.