<![CDATA[This study aims to improve the mathematics learning outcomes of 28 third-grade elementary school students through the implementation of the card sort learning strategy. The research uses a classroom action research design based on the Kemmis and McTaggart model, which includes four stages: planning, action,observation, and reflection. The study was conducted in two cycles focusing on mathematics subjects. The results showed a significant improvement in learning outcomes, especially in the second cycle, where the success rate reached 89.29%. These findings indicate that the Card Sort strategy is effective in helping students actively and enjoyably understand mathematical concepts. Therefore,this strategy is recommended for use in teaching mathematics in third grade to enhance the quality of student learning outcomes.]]>
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