“Meningkatkan Kerjasama Siswa Melalui Model Pembelajaran Berbasis Proyek Tema Ekosistem”. Indonesian Journal of Education Research (IJoER) 1, no. 3 (June 30, 2020): 94–98. Accessed May 25, 2026. https://cahaya-ic.com/index.php/IJoER/article/view/664.