Análise comparativa do tema eletroquímica nas coleções de ciências da natureza no objeto 2 do PNLD 2021

Abstract

Due to recent educational changes, such as the new High School, the National Curricular Common Base and the reformulation of the National Book and Teaching Material Program, the textbooks distributed in the public school system in Brazil received changes. Chemistry knowledge is now present in specific books on Natural Sciences and its Technologies, together with those of biology and physics, and distributed in 6 books in each collection. Lajolo (1996) argues that the choice and use of textbooks should be based on the competence of the teachers who will make them a learning tool and Lima and Silva (2010) point out the approach used in the contents and texts and the presence of quality exercises and adequate quantity as relevant characteristics in the choice of books by teachers. Seeking to help teachers in choosing and using these books, the present work sought to characterize the chapters where the electrochemistry contents are present and compare those chapters with those of other books, from previous years, through the measurement of the number of pages, proposed experiments and activities (and their characterization). As a result, there were decreases in the number of pages, proposed experiments and activities, in addition to a reduction in activities from the National High School Exam or entrance exams and an increase in the proportion of discursive and qualitative items. Finally, it was verified that the proportion of questions that present visual resources remained stable and that the interdisciplinar approach is reduced