WORACHIN, J.; DANGCHAMROON, A. The Development of Mathematic Electronic Books in Addition and Subtraction for Prathomsuksa 4th Students, Khehachomchonladkrabang School. Journal of Modern Learning Development, [S. l.], v. 8, n. 10, p. 58–69, 2023. Disponível em: https://so06.tci-thaijo.org/index.php/jomld/article/view/262510. Acesso em: 20 sep. 2026.