Moving from dragging to touchscreen: geometrical learning with geometric dynamic software

Touchscreen devices are increasing and becoming familiar for students. This research identifies types of screen touching during the process of solving problems using the Geometric Constructer (GC) software. We conducted a case study with Italian High School students using tablets. Since manipulation on a tablet is different from mouse clicks, this kind of research opens a new stream about dynamic geometry in multi-touch technology. Based on the research by Yook and Park, we observe two domains of manipulation, constructive and relational, which indicate geometric thinking through modes of touchscreen.