Nafik, Isya, and Nur Efendi. 2022. “The Effect of Project Based Learning Model on Science Learning Outcomes for Grade 4 Elementary School: Pengaruh Model Project Based Learning Terhadap Hasil Belajar IPA Kelas 4 Sekolah Dasar”. Academia Open 7 (December):10.21070/acopen.7.2022.4291. https://doi.org/10.21070/acopen.7.2022.4291.