Proposta de contextualização no ensino de química através de oficinas direcionadas ao ENEM

Abstract

The Chemistry has the essence of the experimental character, in this way, it becomes necessary to use hands-on activities that may involve students in the fields of this science. In this study we sought to produce workshops directed to the Exame Nacional do Ensino Médio (ENEM) as a proposal for differentiated practical classes. Investigating the exam of natural sciences of ENEM, there was a series of often approached contents and made up workshops to understand such matters, of which four were chosen for further application. The workshops were carried out in a laboratory of a public school located in Fortaleza, Ceará, with a sample of 18 students of the 3rd high school year in which the following contents were treated: Calculation stoichiometric, Concentration of Solutions, Organic Functions and Properties of Organic Compounds. The themes of the workshops were applied, as showed, A Pill and Stoichiometry, The Chemistry of Fragrances, Chemistry of Medicines and Fuels and Organic. Respectively it is worrying to ensure a theoretical character, analyst and practical, strategies were launched to carry out the project, such as content of explanation, discussion on the theme and production of an experiment that instigates the student to solve a question and understand a phenomenon that relates to everyday life. Questionnaires were used to assess the effectiveness of workshops, collecting impressions and suggestions from students. We observed the behavior of the students with discussions and practical experiments achievements. It was noticed a great need for more theoretical basis of the contents treated for students to take full advantage of the workshops. It also suggested a monitoring system to assist the teacher in the lab and assist students in their difficulties in Chemistry content.