Look, see, repair, represent: the development of visualization
Geometric draw; Technical Drawing; High School; Descriptive Geometry; Visualization.
The production and interpretation of images for the representation of objects are characteristics of Technical Drawing, a subject taught in the vocational technical course in High School at a State school in Rio de Janeiro. Young people (14 to 17 years old) are introduced to graphic language as an expression to prepare sketches, details and technical projects. We also work with students in the evening course, mostly adults some of whom are already working in the field they study, others looking for new opportunities. “How do you draw?” It was the question asked to the teacher, which established the process of understanding how the development of visualization and the teaching of representation through orthographic views and isometric drawing take place. What are the processes that we can work with students using concrete resources, manipulative materials, cameras and smartphones? This is an investigation in which we develop activities for understanding and grasping geometry concepts, with visualization as an important support for the development of spatial reasoning. This is a design based research, carried out in practice, in which the class routines were registered with the researcher's field diary, with photos and various records of the students involved, among other tools. In this research, the thesis was defended that, in order to improve visualization and arrive at the manipulation and construction of more abstract mental images, the centrality of printed material must be removed and the use of diverse manipulable material must be balanced. This was a condition for opening the frontiers of the classroom and, in this way, receiving experiences as a basis for representation, that is, expanding the perspectives of the people involved in their practices. It was concluded, therefore, that visualization is a skill to be developed and learned by observation, movement and registration carried out through images made on paper or applications.