Nugroho FA, Sulisworo D. Pengembangan Media Powerpoint Materi Rasio Trigonometri Dengan Model Problem Based Learning di SMA Negeri 1 Klaten. JS [Internet]. 2021 Jul. 2 [cited 2025 Jul. 4];5(2):16-25. Available from: https://jurnal.unimed.ac.id/2012/index.php/js/article/view/26304