Lola Widia Sari Nasution, and Sujarwo. “Improving Student Learning Outcomes in Theme 2 Always Saving Energy Through Problem Based Learning Models Assisted by Audio Visual Media in Class IV SD IT Darussalam Deli Tua”. International Journal of Educational Research Excellence (IJERE) 2, no. 2 (July 31, 2023): 191–196. Accessed November 22, 2024. https://ejournal.ipinternasional.com/index.php/ijere/article/view/463.