The purpose of the work presented here was to carry out a research project on the putting into practice of a didactic proposal for promoting the structure of expository texts in second and third grade boys and girls at Colegio Helvetia in Bogota. The paper presents the results of research work aimed at studying how students proceed when producing expository texts, what questions they ask themselves, what resources they use, how they resolve the problems raised by their incipient knowledge of the world, what type of questions they ask each other and what questions they ask their teacher. It carried out in a school context in which a culture of initial writing exists, which differs from the traditional one in that, on the one hand, children are familiarized from the beginning will all kinds of texts in meaningful communication contexts and, on the other hand, they are habituated to revising and rewriting their texts from their early written productions.