NUGRAHENI, Galuh Tri; MADAWISTAMA, Sri Tirto; YULIANTO, Eko. The Use of Stamp Games to Improve Addition and Subtraction Skills in Students with Mild Intellectual Disability: Single Subject Research. Indonesian Journal of Mathematics and Natural Science Education, [S. l.], v. 7, n. 1, p. 1–12, 2026. DOI: 10.35719/mass.v7i1.239. Disponível em: https://mass.uinkhas.ac.id/index.php/mass/article/view/239. Acesso em: 11 nov. 2026.