“Improving Student Activeness Using Problem Based Learning (PBL) Strategy in Science Subjects in Grade 3 at MI Muhammadiyah 01 Payaman”. Jurnal Tematik 15, no. 2 (May 31, 2026): 73–76. Accessed May 31, 2026. https://jurnal.unimed.ac.id/2012/index.php/tematik/article/view/68416.