Teaching spatial geometry with geogebra: can it improve the problem-solving skills of prospective mathematics teachers?

Abstract

Research aimed to obtain an overview of improving prospective mathematics teacher students’ problem-solving skills by implementing GeoGebra in spatial geometry lectures. The research will be carried out at Universitas Tidar in the second-semester students of the Mathematics Education study program’s geometry class. This study used a quasiexperimental method, with a pretest-posttest non-equivalent control group research design. 71 students were selected as research subjects who were divided into two groups, one group as an experimental group (36) who received GeoGebra-based spatial geometry lectures and one group as a control group (35) who received conventional spatial geometry lectures. The instruments used were the lecture implementation observation sheet, pretest, post-test, and student response questionnaires after using GeoGebra during lectures. Based on the posttest results, the experimental group’s problem-solving skills increased significantly compared to the medium category’s control group. Besides, the description of the response questionnaire results also shows that there are positive impacts obtained by students, including increasing motivation and interest during lectures.