Fatimah, Hikmah, I Wayan Sumberartha, and Agung Mulyo Setiawan. “The Validity and Readability Test for the Development of PBL-Based UKBM Teaching Materials on the Physics of the Human Circulatory System Is Oriented Towards Students’ Critical Thinking ”. Jurnal Penelitian Pendidikan IPA 9, no. 1 (January 31, 2023): 9–12. Accessed November 22, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/1496.