The background of this research is the low ability of mathematical reasoning in students, such as a lack of understanding of concepts in solving mathematical problems. This qualitative descriptive study aims to analyze the mathematical reasoning abilities of fourth-grade students on polygon material at SDN Kedungmulyo Pati Regency. The subjects in this study were 22 students from fourth-grade students at SDN Kedungmulyo. The data in this study were obtained from tests and interviews. The results showed that the mathematical reasoning ability of students in the polygon material for the very high category was 9.09% (two students), the high category was 36.36% (eight students), the medium category was 40% (nine students), the low category was 13.63% (three students), and none from the very low category. The findings indicate that the average value of students’ mathematical reasoning abilities on polygon material is in the medium category.

Topics
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