LE, Thi Bach Lien; LE, Van Cuong. Using plane figure areas in visual illustrations for arithmetic properties. Dong Thap University Journal of Science, [S. l.], n. 30, p. 19–25, 2018. DOI: 10.52714/dthu.30.2.2018.545. Disponível em: https://dthujs.vn/index.php/dthujs/article/view/342. Acesso em: 15 jul. 2024.