Dias, Marisa da Silva, and Cybelle Cristina Ferreira do Amaral. “The Mathematical Concept of Area in the Teaching-Orienteering Activity”. Obutchénie. Revista de Didática e Psicologia Pedagógica 4, no. 2 (September 25, 2020): 460–482. Accessed December 6, 2025. https://seer.ufu.br/index.php/Obutchenie/article/view/57491.