Contextualização e experimentação na síntese do biodiesel: uma abordagem para o ensino de cinética química

Abstract

The present work was a qualitative study with the objective of exploring the impact of the experimental activity in the teaching-learning of students, developed in four classes, which were structured following a didactic sequence, being it divided into four steps, problematization about fossil fuels, contextualization of the problematization with the theme "Catalysts", experimental activity consisting in the production of biodiesel for practical demonstration of the effect of catalysts, temperature and collision on a chemical reaction, in addition to the survey of learning, to verify the efficiency of the methodology employed in the teaching-learning of students through a qualitative questionnaire. The present work was developed in a public state school of Paraíba, located in the neighborhood of Pedro Gondim, in the city of João Pessoa, having as participants 45 students from two classes of the 2nd year of high school, both in the morning shift. After the execution of the steps, a positive impact on student learning was verified, that is, a significance of the contents learned in the classroom in the students' cognitive structure, in addition to a need for practical classes for the students of the school where the study was developed.