Resulting from a master´s degree research and enrolled at the intersection of cultural, feminist and gender studies, particularly in the poststructuralist strand, this article brings the problematic of a biological discourse that goes through and constitutes the justifications given by teachers to separate boys and girls in school physical education. As methodological strategy, questionnaires were used to identify and subsequently interview ten teachers from Porto Alegre´s municipal schools that would separate boys and girls in their classes. Using the discourse analysis, I suspect of essentialisms and naturalizations as mechanisms established by this speeches, attempting to set the body as a biological construct - the origin and explanation of the separation in such school discipline - in order to mark it as a cultural construct.
Body; Gender; Age; Physical education; Separation of boys and girls