Ambarwati, Belinda, Nyimas Aisyah, Hapizah, and Norulhuda Ismail. “STEM-Based 2D Shapes Learning Design in Parachuting Context to Support Student’s Flexibility Ability”. Mathematics Education Journal 18, no. 2 (April 30, 2024): 199–216. Accessed August 17, 2025. https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/76.