“Pengaruh Model Problem Based Learning (PBL) Terhadap Partisipasi Aktif Siswa Pada Pembelajaran IPAS Kelas V Sekolah Dasar”. Cokroaminoto Journal of Primary Education, vol. 9, no. 3, July 2026, pp. 1343-51, https://doi.org/10.30605/cjpe.9.3.2026.9158.