TANU WIJAYA, Tommy; YING, Zhou; PURNAMA, Aditya. Using Hawgent Dynamic Mathematic Software in Teaching Trigonometry. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 15, n. 10, p. pp. 215–222, 2020. DOI: 10.3991/ijet.v15i10.13099. Disponível em: https://online-journals.org/index.php/i-jet/article/view/13099. Acesso em: 7 may. 2024.