Sari, Dian, Abna Hidayati, Yanti Fitria, and Mudjiran Mudjiran. “Effect of Pjbl Model and Preliminary Knowledge on Critical Thinking Skills of Grade Iv Students of Kartika Elementary School 1-11 Kota Padang”. International Journal of Educational Dynamics 1, no. 1 (January 3, 2019): 205-210. Accessed May 3, 2024. http://ijeds.ppj.unp.ac.id/index.php/IJEDS/article/view/56.