This work analyzes written argumentative texts produced by children from 3rd year of primary education from Córdoba (Argentina), in the frame of the application of a didactic sequence, designed to write formal request letters. The study examines, as well, the impact of the sequence in the children's performance. The elaboration of the instrument and the analyses of the productions were based on the principles of the Socio-discursive Interactionism (Bronckart, 2004). The results showed that the children improved their argumentative skills and progressed in their comprehension of the communicative situation, the planification process and the formal conventions of the letter. The pedagogical implications are discussed.
argumentative texts; text writing; didactic sequence; sociodiscursive interactionism
