Ahmad Tarmizi, Hidayat H. PENGEMBANGAN BAHAN AJAR BERBASIS PROBLEM BASED LEARNING PADA MATERI BILANGAN BULAT. JCI [Internet]. 2025 Apr. 30 [cited 2025 Aug. 17];4(8):1229-34. Available from: https://www.bajangjournal.com/index.php/JCI/article/view/10246