The purpose of this study was to identify the geometric thinking level of students and determine the effect of gender on the geometric thinking level of pre-service mathematics students. This study is quantitative where data analysis using Mann Witney test. The sample of this research is 55 pre-service mathematics students prospective students consisting of 33 women and 22 men. The instrument in this study is the Van Hiele Geometry Test which consists of 25 multiple-choice questions. The data were analyzed using the Mann-Whitney U test. The results showed that male students were 36.36% at the visualization level, 40.91% at the analytical level, 9.09% at the informal deduction level, 9.09% at the rigor level. and the remaining 4.55% are in the pre-recognition category. Meanwhile, for female students, as many as 27.27% at the visualization level, 33.33% at the analytical level, 18.18% at the informal deduction level, 3.03% at the deduction level, 3.03% at the rigor level, and the remaining 15 .15% are in the pre-recognition category. In addition to the categories above, based on data analysis, it was found that there was no gender effect on the students' geometric thinking level.
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