Effect of Multimedia Teaching to the Achievement of Junior High School Students in Trigonometry. JÉ«»¨ÌÃÂÛ̳ Institutional É«»¨ÌÃÂÛ̳, [S. l.], v. 3, n. 1, p. 69–79, 2014. DOI: . Disponível em: /index.php/irj/article/view/289. Acesso em: 5 aug. 2025.