<![CDATA[The background of this research emerged from the awareness of challenges in understanding mathematical concepts of grade 6 elementary school students. Information was obtained that the lack of interest in student learning and monotonous teaching methods can be the main factors in low mathematics learning outcomes. Therefore, this study was conducted to explore the application of Jerome Bruner's Cognitive Theory with an ethnomathematical approach as an innovative effort in improving the effectiveness of mathematics learning at the elementary school level. This study aims to apply Jerome Bruner's Cognitive Theory in mathematics learning with an ethnomathematical approach as a strategy to improve mathematics learning outcomes in grade 6 elementary school students. Involving students as research subjects, this study used an experimental method with a pre-test and post-test control group design. Data was collected through observation, interviews, and math tests. Data analysis was performed using related t-tests. The results showed a significant improvement in students' understanding of mathematical concepts after the application of this approach, with average test scores increasing by 15%. The implications of these findings illustrate that the integration of Jerome Bruner's Cognitive Theory and ethnomathematics creates a more contextual and relevant learning environment, facilitating the process of students' construction of mathematical knowledge. The conclusion of this study confirms that the application of this approach can be an effective strategy in improving mathematics learning outcomes at the primary school level, making conceptual and practical contributions to the development of more innovative mathematics learning.]]>
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