This study examines economics learning outcomes associated with problem-based learning at SMAN 4 Palangka Raya and discusses implications for citizenship education. The quantitative study described a nonequivalent control-group design involving seventy Grade XII MIPA students from two purposively selected classes. Data were collected through pretests, posttests, questionnaires, and documentation. The reported pooled results showed that twenty students achieved mastery before instruction and fifty afterward. A paired-samples test across seventy observations indicated a significant pretest–posttest difference, t(69) = −5.340, p < .001. These findings show improvement in the reported economics outcomes. However, the pooled analysis does not establish an intervention effect relative to the designated control class. Collaborative problem solving and opportunities to express ideas provide a conceptual connection with citizenship education; civic competence and Pancasila-related outcomes were not measured.
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