The goal of this article is to present a qualitative methodological proposal for researching Science teaching. We produced the article based on premises of the Think-Aloud method and Depictive Gesture Analysis. Here, we report on the structuring of the Think-Aloud technique, a novelty within the scope of research in education and applications in the teaching of Chemistry and Physics. The main advantages of this approach is its potential to establish a link between verbal and body language, which is produced by the participants during data production through the dialogues proposed within this research. Therefore, the procedures in the study allow for a more accurate analysis because of the pieces of evidence obtained from speaking, writing, and the gestures for the identification of mental images formed by the students about the scientific concepts they have studied.
O uso de cascas de banana moídas foi avaliado como biossorvente para a remoçãode resíduos de Cr (III) em eflentes aquosos. O eflente aquoso utilizado foi geradoem aulas experimentais de química analítica quantitativa no Instituto Federal do RioGrande do Sul (IFRS). Técnicas alternativas foram empregadas no presente trabalho,os ensaios combinaram duas metodologias para o tratamento deste resíduo. Oprimeiro explora a capacidade de cascas de banana como biossorvente na remoção deCr (III), enquanto o segundo emprega a complexação de Cr (III) usando EDTA, sobirradiação de microondas, para fis de quantifiação. A remoção máxima de 60% doconteúdo de Cr (III) foi alcançada em 40 minutos de tratamento, em escala de batelada.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.