Mulyani, Sri, and Sri Hastuti Noer. “Effectiveness of the STEM Approach in Improving Students’ Mathematical Conceptual Understanding Ability”. Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika 8, no. 2 (August 29, 2025): 461–472. Accessed April 29, 2026. https://journal.upp.ac.id/index.php/absis/article/view/3271.