Díaz Quezada, Verónica. “Difficulties and Performance in Mathematics Competences: Solving Problems With Derivatives”. International Journal of Engineering Pedagogy (iJEP) 10, no. 4 (July 17, 2020): pp. 35–53. Accessed March 29, 2024. https://online-journals.org/index.php/i-jep/article/view/12473.