PUTRI, R. F. S.; AMELIA, N. R. .; SULISTIANI, S. . Smart Tree on Knowledge of The Process of Calculus in elementary school children. Journal Center of Excellent : Health Assistive Technology , [S. l.], v. 2, n. 2, p. 134–137, 2024. DOI: 10.36082/jchat.v2i2.1915. Disponível em: https://ejournal.poltekkesjakarta1.ac.id/index.php/jchat/article/view/1915. Acesso em: 14 oct. 2024.