The development of argumentation in the process of academic literacy is particularly important because scientific knowledge is essentially argumentative (Serrano y Villalobos, Niveles discursivos). For this reason, the purpose of this research is to elicit social representations about teaching and learning of argumentation from the discourse of teachers in a program of Biology and History, as well as to generate an explanatory model for this phenomenon. The data collection instrument used was an interview to teachers in both disciplines, and the data was analyzed using content analysis, a technique that seeks to develop replicable and valid inference that can be applied to a given context (Krippendorff, 1997). Keywords Author Keywords:Argumentation; Academic writing; Social representations; Bachelor's degree in Biology; Bachelor's degree in HistoryRegular 2015FONDECYTFONDECYT