MODEL CONSTRUCTIVISTAEl model of Constructivism or radical perspective that sees education as a critical activity and the teacher as an autonomous professional investigating reflecting on their practice, if there is something that differs this model the previous three is the way it is perceived the error as an indicator and Analyzer of the intellectual processes; to constructivism learning is to err ( go from one side to another 41 risk; many of the mistakes made in educational situations should be considered as creative moments.