Nasti, Betridamela, and Nur Azmi Alwi. “Project-Based Learning Model for Fifth Grade Students: Testing Theme 2 Thematic Teaching Materials Validity”. AL-ISHLAH: Jurnal Pendidikan, vol. 15, no. 3, Sept. 2023, pp. 3785-93, doi:10.35445/alishlah.v15i3.2983.