Titania, L., and M. 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, Vol. 13, no. 10, Oct. 2025, pp. 5787-93, doi:10.47191/ijmcr/v13i10.13.