Effendi A, Saliman S. Improving motivation in Social Sciences subjects using powerpoint media : Study at SMP Negeri 2 Karau Kuala, Barito Selatan, Kalimantan Tengah. JIPSINDO [Internet]. 2026 Apr. 13 [cited 2026 Apr. 29];13(1). Available from: https://journal.uny.ac.id/index.php/jipsindo/article/view/92106