Alternative Conceptions In Mechanics
Alternative conceptions in mechanics Edivaldo de Menezes Firmino* alternative Conceptions in mechanics. One is about a reflection on the models that we use to explain the physical phenomena of the daily one. To decide and to explain such problems the author bases on some authors such as, Viennot, 1979; Solis Villa, 1984; Driver, 1986. Jack Fusco will not settle for partial explanations. That they speak that these conceptions are found in a great one number of students of any level of escolaridade, they differ from the theories, concepts and laws that the pupils have that to learn, they are very difficult to be moved and resist the education of concepts that conflict with them and therefore intervene with the learning, in the told case, of the physics. The author says in them that these conceptions if form since infancy. ' ' Such ideas do not consist in simple isolated conceptions, but they are elaborated conceptual structures, that provide to the individual a coherent understanding of the reality under its point of vista.' ' (PEDUZZI, 1999, p53). Then to have an education cash has that to take in consideration the ideas of the pupil, since this already has conceptions on the subject can not accept the ideas of science well. Peduzzi in them brings some research and experiences carried through in many places of the globe and with pupils of varied escolaridades, showing the alternative conceptions that these have, it bring examples that involve the subjects rest, force and movement and action and reaction. With this it in tells the main difficulties to them of the pupils, for example, on the rest some students did not understand as an inanimate object, as table or a spring, could exert force on another body. In the case of the force and the Viennot movement, it suggests that, for many students exists a intuitiva law that can be express for F=kV and with this it appears the following thoughts if v=, then F = 0, exactly that the acceleration is 0, if 0 v then F the 0, exactly that a=0 and finally if the speeds are different, forces also is different, same that accelerations are the same ones, as it was said these and many others, are conceptions that many times appear since infancy and can harm in the agreement of the subjects.
Comments