Strasburg, Ezequiel Bobsin, Fabíola Aiub Sperotto, and Cinthya Maria Schneider Meneghetti. “TRIGONOMETRY ACTIVITIES IN ELEMENTARY EDUCATION WITH GEOGEBRA SOFTWARE”. Ciência e Natura 37 (August 7, 2015): 617–635. Accessed July 11, 2024. https://periodicos.ufsm.br/cienciaenatura/article/view/16491.