Ritter, Carla Eliana Todero, and Valquíria Villas-Boas. “Promoting Scientific Literacy of Elementary School Students through Problem-Based Learning”. Scientia Cum Industria, vol. 3, no. 3, Feb. 2016, pp. 86-92, https://sou.ucs.br/etc/revistas/index.php/scientiacumindustria/article/view/4103.