Titania, Lilya, and Marsigit Marsigit. “The Effect of the Problem-Based Learning Model Using Wordwall Media to Improve Conceptual Understanding and Self-Efficacy of Junior High School Students”. International Journal Of Mathematics And Computer Research 13, no. 10 (October 23, 2025): 5787-5793. Accessed October 23, 2026. https://ijmcr.in/index.php/ijmcr/article/view/1085.