Imbrica es entre aprendizagem de Física e masculinidades numa educa o em crise

In a context of boys' education crisis, we aimed to characterize latent aspects of masculinity that bring out implications to individual and collective learning in Secondary School. The methodological design has an ethnographic inspiration, Physics classes of first year students were observed for an academic year in Brazil. A microanalysis of a thematic unit was conducted, focusing boys' main interactions. Three classes are presented in detail video and audio recorded. Some masculinity manifestations were predominant between boys in classroom activities that were challenging, that were competitive and others, in which rules had to be observed. Results suggest the kind of circumstances in which such masculinities might be manifested, jeopardizing the development of classroom activities and learning groups' dynamics.