Berti, Juliana Pereira, and Laurete Teresinha Zanol Sauer. “Making and Understanding Analytic Geometry Using the Software Geogebra”. Scientia cum Industria 3, no. 3 (February 24, 2016): 120–122. Accessed September 1, 2024. https://sou.ucs.br/etc/revistas/index.php/scientiacumindustria/article/view/4111.