Nurmawati, Ismartoyo, Eem Kurniasih. Development of Learning Videos for High School Mathematics Curriculum Subjects with Flipped Classroom Models to Improve Students’ Critical Thinking Skills. PEGEGOG [Internet]. 2023 Aug. 23 [cited 2025 Aug. 6];13(4):388-97. Available from: https://pegegog.net/index.php/pegegog/article/view/3401