“Analysis of the Application of the Project-Based Learning Model in Improving the Mutual Cooperation Attitude of Primary School Students: Analisis Penerapan Model Pembelajaran Berbasis Proyek Dalam Meningkatkan Sikap Gotong Royong Siswa Sekolah Dasar”. Indonesian Journal of Education Methods Development 21, no. 1 (September 14, 2026): 10.21070/ijemd.v21i1.1090. Accessed November 9, 2026. https://ijemd.umsida.ac.id/index.php/ijemd/article/view/1090.