Sentidos primitivos de la demostración en la formación de profesores

he first emerging meanings of the proof process, given by a group of five prospective teachers is studied in the context of real numeric continuum. The metodology is a teaching experiment of a six month long. The data analysis is made with de vignettes method. The conclusion is that there are three primitive meanings of the mathe- matical proof process. One of them imitates manners of the formal proof and this is what proposed as the paraformal proof.