ABSTRACT The low level of students’ responsibility in Civic Education learning, as reflected in limited discipline, task completion, participation in group activities, and concern for the school environment, requires an instructional innovation that connects learning experiences with local cultural values. This study aimed to analyze the effect of implementing the Project-Based Learning (PjBL) model integrated with the Bima local wisdom of Maja Labo Dahu on the responsibility of fourth-grade students at SDN Inpres Nggeru. The study employed a quantitative approach using a pre-experimental one-group pretest-posttest design. The participants consisted of 17 students who completed an initial assessment, participated in project-based learning activities integrating the values of Maja Labo Dahu, and subsequently completed a final assessment. Data were collected using a responsibility attitude questionnaire that had undergone validity and reliability testing. The data were analyzed using descriptive statistics, the Shapiro-Wilk normality test, the Wilcoxon Signed-Rank Test, and N-Gain analysis. Before the intervention, 94.12% of students were categorized as having low responsibility, while 5.88% were in the moderate category. Following the intervention, 70.59% reached the high category and 29.41% were categorized as moderate. The Wilcoxon test yielded a significance value of 0.002 < 0.05, while the N-Gain score was 0.57, indicating a moderate improvement. Therefore, the implementation of PjBL integrated with Maja Labo Dahu had a significant positive effect on improving students’ responsibility. ABSTRAK Rendahnya sikap tanggung jawab siswa dalam pembelajaran PPKn, yang terlihat dari kurangnya kedisiplinan, penyelesaian tugas, keterlibatan dalam kegiatan kelompok, dan kepedulian terhadap lingkungan sekolah, memerlukan inovasi pembelajaran yang mampu menghubungkan pengalaman belajar dengan nilai budaya setempat. Penelitian ini bertujuan menganalisis pengaruh penerapan model Project Based Learning (PjBL) bermuatan kearifan lokal Bima Maja Labo Dahu terhadap sikap tanggung jawab siswa kelas IV SDN Inpres Nggeru. Penelitian menggunakan pendekatan kuantitatif dengan metode pra-eksperimen melalui desain one-group pretest-posttest. Subjek penelitian berjumlah 17 siswa yang mengikuti pengukuran awal, pelaksanaan pembelajaran berbasis proyek yang mengintegrasikan nilai Maja Labo Dahu, dan pengukuran akhir. Data dikumpulkan menggunakan angket sikap tanggung jawab yang telah melalui pengujian validitas dan reliabilitas, kemudian dianalisis menggunakan statistik deskriptif, uji normalitas Shapiro-Wilk, uji Wilcoxon Signed-Rank Test, dan N-Gain. Sebelum perlakuan, 94,12% siswa berada pada kategori rendah dan 5,88% pada kategori sedang. Setelah perlakuan, 70,59% siswa mencapai kategori tinggi dan 29,41% berada pada kategori sedang. Hasil uji Wilcoxon menunjukkan nilai signifikansi 0,002 < 0,05, sedangkan nilai N-Gain sebesar 0,57 berkategori sedang. Dengan demikian, penerapan PjBL bermuatan Maja Labo Dahu berpengaruh signifikan terhadap peningkatan sikap tanggung jawab siswa.