This study aimed to improve the learning outcomes of fifth-grade students in Citizenship Education (Ppkn) on the diversity material at SDN Pandeanelaper 03 using a problem-based learning (PBL) model. The research was quantitative and used a pre-experimental design with a one-group pretest-posttest system. The population consisted of 28 students, 15 girls and 13 boys. Data collection involved tests, while data analysis included normality tests, homogeneity tests, and hypothesis tests. The results showed that the pretest average score was 56.59, while the posttest score was 71.07. The t-test results indicated that the sig (2-tailed) value was 0.000 < 0.05, leading to the rejection of the null hypothesis (H₀) and acceptance of the alternative hypothesis (H₁). This suggests that the PBL model significantly improved the students' learning outcomes. The study also found that the PBL model enhanced student engagement, critical thinking, and problem-solving abilities. The model encouraged students to actively participate in the learning process, explore new concepts, and apply their knowledge in real-life situations. The results indicated a significant improvement in students' learning outcomes after implementing the PBL model, with an increase of 14.11 points. The study concluded that the PBL model is effective in improving the learning outcomes of fifth-grade students in Citizenship Education, particularly in the diversity material. The findings suggest that educators should consider using the PBL model to enhance student engagement and learning outcomes.This study aimed to improve the learning outcomes of fifth-grade students in Citizenship Education (Ppkn) on the diversity material at SDN Pandeanelaper 03 using a problem-based learning (PBL) model. The research was quantitative and used a pre-experimental design with a one-group pretest-posttest system. The population consisted of 28 students, 15 girls and 13 boys. Data collection involved tests, while data analysis included normality tests, homogeneity tests, and hypothesis tests. The results showed that the pretest average score was 56.59, while the posttest score was 71.07. The t-test results indicated that the sig (2-tailed) value was 0.000 < 0.05, leading to the rejection of the null hypothesis (H₀) and acceptance of the alternative hypothesis (H₁). This suggests that the PBL model significantly improved the students' learning outcomes. The study also found that the PBL model enhanced student engagement, critical thinking, and problem-solving abilities. The model encouraged students to actively participate in the learning process, explore new concepts, and apply their knowledge in real-life situations. The results indicated a significant improvement in students' learning outcomes after implementing the PBL model, with an increase of 14.11 points. The study concluded that the PBL model is effective in improving the learning outcomes of fifth-grade students in Citizenship Education, particularly in the diversity material. The findings suggest that educators should consider using the PBL model to enhance student engagement and learning outcomes.