<![CDATA[Mathematics learning in Grade III at SDN 1 Sribawono still shows unsatisfactory learning outcomes because the learning process is still teacher-centered, causing students to experience difficulties in understanding the material being taught. Therefore, this study aims to improve students’ mathematics learning outcomes on plane geometry material through the implementation of the Contextual Teaching and Learning (CTL) model. This research employed the Classroom Action Research (CAR) method, conducted in two cycles, each consisting of the stages of planning, implementation, observation, and reflection. The subjects of this study were 20 third-grade students of SDN 1 Sribawono. The data collection techniques included observation, interviews, learning achievement tests, and documentation. The results of the study indicate an improvement in learning outcomes in each cycle. The data show that in the pre-test of Cycle I, 25% of students achieved mastery. This percentage increased to 45% in the post-test of Cycle I. In Cycle II, the post-test results showed a significant improvement, reaching 90%. This demonstrates an increase of 45% from Cycle I to Cycle II. Based on these findings, it can be concluded that the implementation of the CTL model is able to improve third-grade students’ mathematics learning outcomes on plane geometry material at SDN 1 Sribawono.]]>
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