Firdaus, Muliawan, Mukhtar Mukhtar, and Zainal Azis. “SUPPORTING CRITICAL THINKING SKILLS IN BLENDED LEARNING ENVIRONMENT: A QUALITATIVE STUDY IN MATHEMATICS DEPARTMENT, MEDAN STATE UNIVERSITY”. JGK (Jurnal Guru Kita) 4, no. 2 (March 20, 2020): 63–71. Accessed January 5, 2025. http://103.242.233.34/index.php/jgkp/article/view/19012.