Hadi Siswanto, Deny, and Andriyani Andriyani. “ANALYSIS OF THE NEED FOR FLIP WORKSHEETS MATRIX PBL MODELS TO STIMULATE CRITICAL THINKING ABILITIES”. Pelita : Jurnal Penelitian dan Karya Ilmiah 24, no. 1 (June 21, 2024): 91–99. Accessed June 7, 2025. https://ejournal.unis.ac.id/index.php/pelita/article/view/4781.