Five Years of Comparison Between Euclidian Plane Geometry and Spherical Geometry in Primary Schools: An Experimental Study

We present the result of an eight-year didactic experiment in two primary school classes involving comparative geometry activities: a comparison between Euclidean plane and spherical that took place over five years. Following experiment, three years on from end final questionnaires were administered codified order to evaluate project’s effect pupils’ performance attitude, especially with regard mathematics.