HARKNESS, Shelly Sheats; NOBLITT, Bethany. Pixels: Creating Lessons with Historical Connections Between Perimeter and Circumference. Ohio Journal of School Mathematics, [S. l.], v. 76, n. 2, 2017. Disponível em: https://ohiomathjournal.org/index.php/OJSM/article/view/5831. Acesso em: 6 may. 2024.