Riyanto, Dwi Mahmud Rizki, and Sekar Purbarini Kawuryan. 2025. “Development of Natural and Social Science (IPAS) E-Modules Based on Project Based Learning to Improve The Collaboration Ability of Elementary School Students”. Jurnal Kependidikan: Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran Dan Pembelajaran 11 (1):237-47. https://doi.org/10.33394/jk.v11i1.14411.