Proposta de uma sequência de ensino investigativa para o estudo da indução eletromagnética

Abstract

Electromagnetic induction is one of the most complex contents of high school physics, because it involves electrical and magnetic concepts that are difficult to visualize and nderstand. In this context, the objective of this work was to develop an investigative teaching sequence based on experiments and simulators for the study of electromagnetic induction, focusing on meaningful learning. The sequence is composed of argumentative activities in which students should initially raise hypotheses for the investigative question, test them in the experiment or simulator, and after group discussion formulate their answer. For this, experiments were developed in which the students couldmanipulate and visualize the concepts involved with electromagnetic induction. This teaching sequence was applied to the third year of high school with a total of nine students. During the application of the activities, it was possible to verify the difficulties that the students have in the basic content, especially related to the magnetic field and electromotive force, important concepts for the understanding of electromagnetic induction. Throughout the activities, it can be observed that the students were mainly involved in the development of activities, in activities that involvedexperiments. From the results it can be observed a significant improvement in the students' learning when comparing the pre and post test results.