LANGI, Evy Lalan; KONDOLAYUK, Marilyn Lasarus; DOMASSANG, Katriani Dea. Construction of Integer Operations of the Gasing-Mathematics Method from the Perspective of APOS Theory. QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama, [S. l.], v. 17, n. 2, p. 1551–1566, 2025. DOI: 10.37680/qalamuna.v17i2.8110. Disponível em: https://ejournal.insuriponorogo.ac.id/index.php/qalamuna/article/view/8110. Acesso em: 28 feb. 2026.