Andayani, Sriatun. “Development of Learning Tools Based on Discovery Learning Models Combined With Cognitive Conflict Approaches to Improve Students’ Critical Thinking Ability”. Jurnal Penelitian Pendidikan IPA 6, no. 2 (July 30, 2020): 238–242. Accessed April 20, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/438.