Pasaribu D, Tanjung LM, Yantina R, Utami T, Perangin Angin LM. The Effect of the PBL Model to Increase Student Learning Activities in Integrated Thematic Learning in Elementary Schools. JEDA [Internet]. 2023 Jun. 5 [cited 2026 May 17];2(2):263-72. Available from: https://journal.formosapublisher.org/index.php/jeda/article/view/4340