Experimentation as an instrument for teaching a class of students with degree in licentiate in chemistry

Abstract

This work had as purpose to use alternative materials and low-cost as tools to use experimentation in order to provide a meaningful and contextualized learning in teaching chemistry. The activity was developed with undergraduate students in the first semester of the Natural Sciences course – Habilitation in Chemistry of the 19th Campus of the University Pará State, located in the municipality of Salvaterra, Pará (Marajó Island). The alternative structure to perform the titrimetric tests was made from the reuse of materials encountered in daily and for the buy of disposable materials in local market. Five tests were carried out titrimetrics with usual dispersions in daily life of students: fruit juice, tomato paste, honey, milk of magnesia and whole milk. To perform the practice and discuss about phenomena observed, the class of 30 students was divided into groups. Later, the students drafted an argumentative text, with the purpose of evaluating learning validation using the alternative tool. The data obtained allowed to diagnose that all individuals involved in the activity approved the use of the tool as a teaching resource for the teaching of chemistry. It is believed that the use of experimentation from alternative materials increase your effectiveness in teaching and learning in chemistry.