DEWI, P.; YANI, A. Efforts to Improve Students’ Understanding of Addition and Subtraction Operations through Demonstration Method in Mathematics Subject . Panicgogy International Journal, [S. l.], v. 2, n. 1, p. 9–21, 2024. DOI: 10.59965/pij.v2i1.81. Disponível em: https://nakiscience.com/index.php/pij/article/view/81. Acesso em: 23 oct. 2025.