Lev Vygotsky. Vygotsky was a psychologist of the more important in the development psycholofy. He did two contributions in the psycholofy: the process of internalizing and the psycholofy of yhe play. The fundamental idea of his work is that the human development can only by explained in term of social interaction. Vygotsky consider that the internalization refers to of the process of self - cons tr uction and reconstruction squishy of a series of the gradual transformations internal, originating of operations or activity of external order, measured by sign and work tool socially constructed. The psychology of play mention that the rulers of behavior in the relationship between them , rules used in everyday life go unnoticed , were consciously acquired through play. Children thus acquire social rules , and what we now call self-regulation, self-control. Presently , Vygotsky philosophy applies increasingly , especially in educational institutions...