ARI SEPTIAN; DARHIM; S. PRABAWANTO. The development of calculus teaching materials using geogebra. International Proceedings Conferences Series, [S. l.], p. 50-54, 2020. DOI: 10.22236/ie.v1i1.115. Disponível em: https://proceedings.uhamka.ac.id/index.php/ie/article/view/115. Acesso em: 1 may. 2026.