TRATAMENTO DE APRENDIZAGEM DO CONCEITO ENERGIA MECÂNICA E SUA CONSERVAÇÃO E TRANSFORMAÇÃO EM ENERGIA INTERNA NA 8ª CLASSE

Abstract

Energy, its conservation and transformation are important concepts for Science in general and have great social and economic implications, despite the difficulties in understanding and defining them. The type of energy concept studied by Grade 8 students in Angola tends to be Mechanical Energy, which is generally treated quantitatively, through the deduction of equations, without an in-depth conceptual analysis. The teaching and learning process is currently being increasingly welcomed with numerous investigations at the level of the various specialties that make up such a process. Physics does not abstain from this task, which is so appreciable for the development of society in the Education sector. Deeply analyzing the current context that presents the Sun as a major source of radiation emission Electromagnetic waves of different frequencies, some visible, produce energy that through special processes is converted into other forms, providing a solution for human life. In reality the heat produced in some systems can technologically move cars. In Grade 8, students tend not to use the concept of energy or its conservation in the analysis of situations within the scope of Physics, they have difficulties in understanding what they study with the real of everyday life. This ndergraduate work presents a methodological treatment of the concept of Energy that intervene in the life of the day day. The sequence of the order of topics in the current 8th grade Physics book is disjointed in its logic, something the author intends to sustain for its improvement. Although today, after a lot of work by physicists, it is already possible to teach students that energy is neither created nor destroyed, it is only transformed from one form to another and transferred from one system to another, students first need to study the notion of work and power and finish with the study of Energy. The work contains the introduction, two chapters and the conclusions.