YOSUA RAHANUBUN; JULEHA PESILETTE; HUNAHANI NAHATUE; ASRINA BANJAR; JENNY KOCE MATITAPUTTY. MENGUJI RELEVANSI TEORI JEAN PIAGET TERHADAP PERKEMBANGAN BERPIKIR OPERASIONAL KONKRET ANAK SEKOLAH DASAR DI ERA MODERN. JURNAL ILMIAH EDUNOMIKA, [S. l.], v. 10, n. 1, 2026. DOI: 10.29040/jie.v10i1.18390. Disponível em: https://www.jurnal.stie-aas.ac.id/index.php/jie/article/view/18390. Acesso em: 21 feb. 2026.