A EXPERIMENTAÇÃO NO ENSINO DE QUÍMICA E A PROMOÇÃO DOS NÍVEIS DO CONHECIMENTO QUÍMICO

Abstract

Investigative experimental activities, when well planned and developed, can provide the development of knowledge that goes beyond the acquisition of watertight concepts of science. These activities can be built through sequences of classes on certain contents, aiming at the active participation of students in the construction of knowledge, under the guidance of the teacher. Based on this perspective, the present dissertation aims to analyze a didactic sequence that presents investigative experiments on vegetable oils and the impacts on human health, having as a lens, mainly, chemical knowledge. The methodology involved 7 lessons and was applied in a private school in Belo Horizonte - MG, within the scope of the formative itinerary of the New High School Education entitled "Investigations and Chemical Analyses". Data were collected through a questionnaire at the end of the didactic sequence and analyzed using Bardin's Content Analysis. The analysis revealed that students have difficulty in seeking and confirming information obtained through investigative experimentation and demonstrate greater ease in interacting predominantly with observations at the phenomenological level. For this reason, we believe it is important to develop didactic sequences that foster extrapolation beyond this level, advancing into the representational and theoretical aspects of the phenomenon under study.