Al-Mutawah, M. A. ., Thomas, R. ., Eid, A. ., Mahmoud, E. Y. ., & Fateel, M. J. . (2019). Conceptual Understanding, Procedural Knowledge and Problem-Solving Skills in Mathematics: High School Graduates Work Analysis and Standpoints. International Journal of Education and Practice, 7(3), 258–273. https://doi.org/10.18488/journal.61.2019.73.258.273