Close your eyes and see... An approach to spatial geometry
Francesca Ferrara, Maria Flavia Mammana · 2013
In this paper we present an experiment that we conducted last spring (May 2012) in a high school in Sicily. The activities concerned some properties of quadrilateral and tetrahedron and aimed to introduce the study of spatial geometry by means of a correspondence that can be established between the two figures, by using suitable definitions. The experiment is part of a research centred on the investigation of visual challenges involved in doing spatial geometry and the role of technology to address these challenges.