NAFIS, Ari Mahardika Ahmad; HERUMURTI, Darlis. EFFECTIVENESS STUDIES OF THE LEARNING BASIC MATHEMATICAL OPERATIONS ON USERS USING EDUCATION GAMES WITH ESCALATING DIFFICULTY LEVEL IN SEVERAL TYPES OF GAMES. JUTI: Jurnal Ilmiah Teknologi Informasi, [S. l.], v. 18, n. 2, p. 115–124, 2020. DOI: 10.12962/j24068535.v18i2.a989. Disponível em: https://juti.if.its.ac.id/index.php/juti/article/view/989. Acesso em: 12 oct. 2025.