EL EXPERIMENTO DEMOSTRATIVO EN LAS CLASES DE CIENCIAS NATURALES DE SECUNDARIA BÁSICA: UNA VARIANTE METODOLÓGICA PARA SU DESARROLLO Y PERFECCIONAMIENTO

Abstract : Inside the sciences is characteristic the process of birth, development and decadence of flowing, tendencies and some generalizes or important ideas that mark a quality in the development of scientific knowledge. The Cuban contemporary school has been changing since the beginning of revolution, in fact it has became in "eco" of needs of deeps transformations according to the vertiginous advances of the science and technique and nowadays it assume the paradigm of integration in the formation process of their news generations. A good way to materialize all of these aspirations is cons...