<![CDATA[This study aims to assess the effectiveness of the use of the Jeko Game (Economic Exploration) based on the STAD cooperative learning model in improving students' economic problem-solving abilities. The research method uses a quantitative approach with a quasi-experimental design, involving two classes of XI at SMA Negeri 1 Cihaurbeuti, and using an essay test as an instrument. Data analysis was carried out using the paired sample t-test and independent sample t-test at a significance level of 5%. The N-Gain Score in the experimental class reached 0.7147, while the control class was 0.6390, with an effect size of 0.79 which is included in the moderate category. The results showed a significant difference in increasing problem-solving abilities between the experimental and control classes, with a significance value (2-tailed) of 0.001. Thus, the use of the Jeko Game based on STAD is proven to be more effective than the Think-Pair-Share model in improving students' economic problem-solving abilities.]]>
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