JeAn PiAgeT (1896-1980)

He was born in Neuchâtel, Switzerland, in 9 August 1896 and he died in 16 September 1980. He was a big philosopher, psychologist and known about pedagogical studies.
His more important theory was of cognitive development and epistemological views are called "Genetic Epistemology."

Piaget considered cognitive structures development as a differentiation of biological regulations. In one of his books, "Equilibration of Cognitive Structures: The Central Problem of Intellectual Development" , he intends to explain knowledge development as a process of equilibration using two main concepts in his theory, assimilation and accommodation, as belonging not only to biological interactions but also to cognitive ones.

The four development stages are described in Piaget's theory as sensor motor stage, preoperational stage, concrete operational stage and formal operational stage with that stages he find one of the more than treasures in the psychologist in especial in education .
For me Jean Piaget is very important because of his talent he became to be a reference for our as an the future playgroup assistant and elementary teaching, his subject help to understand as function the cognitive development in the humans and in specially in the children , and in the diverse stages of knowledge necessaries in the actually.

Well, for this big work jean Piaget is for me my favorite expert for that big thing if he used to do in.