In the schools the mathematics must offer for the pupil some tools, so that the pupils can interpret a reference system in accordance with, and that they can develop a position of resolution of problems. The test evaluates if the pupil it has some technique as to read graphs, capacity to decide problems and unknown situations. The first tool that the professor can pass to the pupil is, instead of making the synthesis of the subject and placing in the picture, planning the reading of the didactic book of a partilhada form, with pause for quarrel, or to ask for so that enslaved pupil a referring text to the considered subject, and then to read the didactic book and to compare there with the presented texts and thus to add new things, and with this the pupils acquires autocorreo system and makes possible it to learn as it must study the mathematical texts and being able until studying alone. Another tool is to introduce the games in the mathematics, therefore it is important that it allows the simulation of papers, the understanding in a system of rules, interpreted modified. The pupils they will be stimulated and the will to be able to express what they find correct and without fear to make a mistake, beyond developing the capacity to argue, therefore in the game they can question the play of the colleague or defend its play. In the games the problems are always new and unknown for the pupil, them they are in a challenging situation in deciding definitive problems, and thus a pleasant and amused lesson becomes. The professor when teaching in the classroom the error is neglected and overestimated and in the game it pupil erra or does not make right does not make difference.