Al Kayyis A, Tohir M. Analysis of Students’ Mathematical Reasoning Abilities Using a Question Development Model Based on 21st-Century Skills. icorhestech [Internet]. 2024 Sep. 15 [cited 2026 Apr. 15];1(1):319-28. Available from: https://journal.ibrahimy.ac.id/index.php/icorhestech/article/view/5651