Rocha, Marcia Falek, Cinthya Maria Schneider Meneghetti, and Celiane Costa Machado. “Penny Circle: A Study of the Quadratic Function”. Ciência e Natura 46 (April 26, 2024): e69338. Accessed January 7, 2025. https://periodicos.ufsm.br/cienciaenatura/article/view/69338.