Resumo: Este estudo teve como foco a influência do "Caderno de Química" em práticas de ensino de uma professora. A professora escolhida pode ser considerada um caso representativo da realidade vivida pelos professores das escolas públicas do Estado de São Paulo. Foram analisadas oito narrações multimodais de aulas gravadas em vídeo e, também, o Caderno de Química. Os resultados apontaram que: (a) o Caderno está presente nas práticas de ensino como autoridade externa, mas; (b) também foi demonstrado que a professora atua com alguma independência do Caderno, e (c) as concepções epistemológicas e pedagógicas do Caderno não foram identificadas nas práticas de ensino da professora.Palavras-chave: Ensino de química. Caderno de Química. Prática de ensino. Livro didático. Ensino Médio.Abstract: This study focused on the influence of the "Chemistry Textbook" in teacher's teaching practices. The teacher chosen can be considered as a representative case of the reality experienced by teachers generally in the public schools of the State of São Paulo. Eight multimodal narratives of lessons were videotaped and analyzed and also the Chemistry Textbook. The results showed that: (a) the Textbook is present in teaching practices as an external authority but; (b) the teacher works with some independence of Textbook, and (c) the Textbook's epistemic and pedagogical conceptions were not identified in the teacher's teaching practices.
The main objective of this chapter is to extend the discussion of language and the use of semiotic registers in chemistry lessons. Audio and video recordings, students' notebooks, photographs of content, and activities recorded on the blackboard in chemistry lessons for high school students taught in a public school in the interior of the State of São Paulo enabled the construction of multimodal narratives (MNs). The qualitative analysis of the MNs allowed the identification and understanding of the semiotic registers present in eight lessons conducted by a chemistry teacher. The study revealed several semiotic registers present in the lessons, but there is little exploration of the processes of conversion between semiotic registers by the teacher and therefore by the students. The use of different semiotic registers without the necessary understanding of them can result in difficulties in the teaching and learning processes of chemical concepts.
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