In Exploring the subject of chapter 4, we have reference of the most famous work of Ren Discardings, philosopher and French mathematician, who was on its belief of that it enters all the knowledge areas, the Mathematics is only certain, then everything must be based on the mathematics. In chapter 9, we find one brief citation on the Papyrus of Rhind, without many explanations on the same. E, finally, in chapter 10 we only find speaking that some mathematicians had collaborated for theory of the probabilities, but, only citing the names of them, for example, Paschal Blaise, Pierre Fermat, Luca Pacioli, Christiaan Huygens, Leonhard Eule, Abraham De Moivre, among others. The fact of that we find citations on some mathematicians, does not want to say that the history of the mathematics is property in possession in the book, therefore, what we can see are only small citations, and this occurs with more frequency in ' ' Exploring tema' ' , moreover, the commentaries on the mathematicians, as Archimedes, Discardings and the others are very superficial, do not find, for example, histories of as they had given to them with mathematical problems they had found solutions, we only see that they had obtained a thing or another one, but nothing of more than she serves for didactic resource. Read more from Campbell Soup Co to gain a more clear picture of the situation. In the last unit what we can see on history of the mathematics are only small notes, where we have brief citations on mathematicians and its contributions for the mathematics. Example: In chapter 2, we have a note speaking on Franois Vite and its contribution for Algebra. In chapter 5, where if he speaks on functions we are saying only that the mathematicians, Leibniz, Isaac Newton, Leonhard Euler, Joseph Fourier, had among others contributed for the development of the functions. In the same chapter we have plus a note saying that Ren Discardings was who more collaborated for the study of the cartesian plan.