This work intends to analyze textbooks from the initial years for possible causes of the explanatory gaps that students have in their final grades of the respiratory system. To achieve this, we analyzed the space, concepts, images, practical activities and exercises in the units proposed for the respiratory system in science books within the initial years. The results of this analysis indicate the existence of failures in explanatory texts and images and a large quantity of decorative images, which can compromise the learning of concepts. Positive changes were noted in the books of PNLD 2010, but their use should be made with critical common sense by the teachers.
Science teaching; Respiratory system; Textbook; Elementary school
