GeoGebra as a Tool to Improve Visual Image

Abstract

Visualisation is a necessary ability for students' mathematical education. The appearance of multiple Dynamic Geometry Software (DGS) has a stronger impact each day, and it raises many questions in the minds of researchers. In this paper, we present the findings of our exploratory case study in which a student preferring visual problem solving generally, but with a low spatial ability level, solved a spatial visualisation problem after finishing school lessons of solid geometry. The main objectives were to examine a) the solver's solution (difficulties and impediments) in the paper-and-pencil environment; b) the solver's solution (difficulties and impediments) in the combined use of the dynamic (GeoGebra applet) and paper-and-pencil (Navigation Sheet) environment, and c) whether the combined use of dynamic and paper-and-pencil environment helped the solver to confirm or correct her results and created visual images from the paper-and-pencil solution. The integration of DGS would help