摘要：This study aims at discussing the implementation of Problem Based Learning (PBL) in activities carried out in a first grade high school class. The analysis of soil was used as a didactic tool capable of facilitating student teaching and learning, and as a way for understanding the environment that surrounds them, aiming at achieving three main goals: to acquire knowledge, to develop skills, and attitudes. During the activities , it was noticed a great student involvement with the activities, especially in the practical ones. In that sense, it was concluded that it is important to work with active methodologies, which are able to increase interest and motivation in the students. Thus, th r ough a thematic approach , it is possible to raise students’ critical awareness.
