This work has as its objective to reflect on the didactic book in Brazil, in a generalized way, but specifically about the portuguese language which is divided into two sections. The first sections talks about the social history of the didactic book: the objective was being built through time, gaining space and constituting itself in authoritarian speeches through power relations being instituted in the classroom. Discusses the strategies of marketing which makes it an object of consumption. The second section is based on, specifically, the didactic book of portuguese language and its methodology conceptions (and interest in marketing): the concept on how the text and reading are treated under the influence of different theories. This section of the study is focused on the proposal of how the different kinds of texts will be broached. To get to these analyses, the study counted on the theoretical reference of the Discursive Semiotics and it pointed out that, as a result of the investigations, the big gap which still exists is talking about how the different kinds of texts are broached, telling us the direction of its construction mechanisms.
didactic book of portuguese; kinds of text; constructions mechanism of direction