Lahunduitan, Lowryk, and Kuswari Hernawati. “The Effectiveness of the Treffinger Learning Model on Students’ Mathematical Problem-Solving Ability”. International Journal Of Mathematics And Computer Research 13, no. 11 (November 21, 2025): 5911-5914. Accessed October 23, 2026. https://mail.ijmcr.in/index.php/ijmcr/article/view/1115.