The Effect of Teaching Proposed Educational Units in non-Euclidean Geometry in Developing Geometric Thinking among Female Secondary School Students

Abstract

The research aimed to investigate the impact a proposed Educational Units in non-Euclidean Geometry in Developing Geometric Thinking among Female Secondary School Students. The research has been used the experimental method with its quasi-experimental one-group design with pre- and post-measurement. The sample consisted of (29) female students who were selected as purposive sampling. The Van Hiele Geometric Thinking Test was used in the research, and the results showed that there was a statistically significant difference between the frequencies of the research sample in the pre- and post-applications of the Geometric Thinking Test in favor of the post-application at all levels of Geometric thinking (Visualization, analysis, Informal Deduction, Deduction, rigor).