Martins Lopes, Rivanaldo. “MATHEMATICAL INNOVATION: TEACHING-LEARNING OF TRIGONOMETRY USING CLOCK AND ANGLE, IN HIGH SCHOOL PRACTICE”. Journal of Interdisciplinary Debates 4, no. 02 (June 24, 2023): 04–37. Accessed July 3, 2024. https://periodicojs.com.br/index.php/jid/article/view/1265.