A study of evaluation on the treatment of isometries in the second cycle of secondary education

Abstract

The aim of this article is to present a quantitative and qualitative analysis of the answers from a representative sample of ESO second cycle students in the Galician community to a series of items connected with the isometries of the plane. The results presented in this paper have been compared with the official curriculum rules as a proposed guide by the educative administration, with the developement of these rules in the most used text books in Galician classrooms and, finally, with the particular view of teachers of this specific topic of Mathematics and its consequences on the teaching/learning process of geometric transformations on the plane.