Distances and approximations of the concepts of gas and steam in the textbooks of the national high school textbook program 2018

• Autor(a) principal: Costa, Jaqueline Da Silva
• Data de Publicação: 2020
• Outros Autores: Lima, João Paulo Mendonça, Sarmento, Victor Hugo Vitorino
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ensino de Ciências e Matemática - REnCiMa
• Texto Completo: https://revistapos.cruzeirodosul.edu.br/rencima/article/view/2219
• topic: Livro didático; Ensino de Química; Gás e vapor; Textbook; Learning of Chemistry; Gas and Steam

Textbooks are the main tool used in preparation and execution of classes. They are essencial at schools and work as a curriculum guide for teachers and students. Therefore, textbooks should be analyzed constantly. One of the contents of chemistry curricula that works as analysis is gas and steam. These terms had been confused as synonims before, but studies proved they are different. This paper has as its objective analyze the distances and approximations of the concepts of gas and steam in textbooks of the National High School Textbook Program 2018 (PNLEM 2018) in relation to Science of Reference (Thomas Andrews). Using the tool proposed by Franzolin (2007), we noticed that out of  the six books analyzed, only three carried this discussion. These three books approached the reference. Besides, the absence of such discussion was associated to lack of the same discussion in college textbooks, since these books are reference in the elaboration of school materials for K-12 classes. Therefore, this paper shows the importance of teachers in identifying the potentialities and limitations of textbooks.