Munandar, Arif, Supriadi, and Andika Arisetyawan. “Effectivity of the Problem-Based Learning Model on Elementary School Students’ Critical Thinking Skills in Mathematics Learning”. Journal of Indonesian Primary School 3, no. 2 (June 30, 2026): 55–69. Accessed July 6, 2026. https://journal.mgedukasia.or.id/index.php/jips/article/view/862.