Portal Gomes, Paulo Weslem, Julielson e Silva Modesto, Paulo Wender Portal Gomes, Ronilson Freitas de Souza, and Alcindo da Silva Martins Junior. 2016. “The Use of Representational Modeling and Respiratory Digestive System in Science Education As a Pedagogycal Tool: Prospects for a Meaningful Learning in Elementary School”. Scientia Plena 12 (6). https://doi.org/10.14808/sci.plena.2016.069924.