Fajriani, Nur, La Rudi, and Esnawi Esnawi. “The Conceptual and Mathematical Difficulties in Solving Reaction Rate Problems: A Diagnostic Study of Grade XI Students”. TOFEDU: The Future of Education Journal 5, no. 1 (February 16, 2026): 1016–1023. Accessed February 19, 2026. https://journal.tofedu.or.id/index.php/journal/article/view/1624.