RECONTEXTUALIZACIÓN EN LA ENSEÑANZA DEL CONCEPTO DE GRAVEDAD A PARTIR DE UN ANÁLISIS HISTORICO-EPISTEMOLÓGICO DE LA PERSPECTIVA GALILEANA RECONTEXTUALIZATION IN TEACHING THE CONCEPT OF GRAVITY FROM A HISTORICAL EPISTEMOLOGICAL ANALYSIS OF THE GALILEAN PERSPECTIVE

In the analysis performed in some research and in the context of professional practice, it has been evident, usually physics teaching focuses on the solution algorithms proposed as exercises in any case, dealing with the conceptualization andcontextualization of the structural concepts of mechanics as a particular case can be referenced Newton's second law and its relationship with the falling bodies. In the case of free fall is part of the expression F = ma and concluded that F = mg.Solving this expression, the gravity is assumed as a variable that depends on the mass. This situation leads to the concept of gravity and gravitational embrace either, that is, they confuse the gravitational force and the acceleration of gravity. Then arises that these forms of meaning and to teach these concepts, underlying a particular way to take the Science and Education, and in that sense, come on historical and epistemological analysis of the Galilean perspective, arguing that their particular way to address and formalize the phenomenon of falling bodies in his considerations and Mathematics Demonstrations on Two New Sciences (1976), allows not only ways to explain science but also allows reframing and re mean the concept of acceleration of gravity and gravitational force. This analysis shows how Galileo distinguishes between gravity and gravitational force, considered as an effect of gravity (acceleration) and the gravitational force as the action that generates speed changes in a body. It also examines how the use of geometry in the organization of the phenomenon of movement, allowing Galileo to shape this kind of phenomena, an aspect which constitutes a fruitful way to signify the relationship between physics and mathematics. Finally, it presents some pedagogical implications which arise as a result of the analysis of the Galilean perspective and data from the application of some instruments to five cases of School Business Envigado. 5o CONGRESO NACIONAL DE ENSENANZA DE LA FISICA. Universidad Pedagogica Nacional (U. P. N) Universidad Distrital Francisco Jose de Caldas (U. D. F. J. C) Bogota, Colombia. 16 al 20 de mayo 2011 Revista Cientifica . Volumen Extral. Ano 2011 117