SAMRITIN. Measuring Elementary School Students’ Mathematics Learning Mastery Through Problem-Based Learning: A Proportion Meta-Analysis of Classroom Action Research. EDUTREND: Journal of Emerging Issues and Trends in Education, [S. l.], v. 3, n. 3, p. 235–250, 2026. DOI: 10.59110/edutrend.1026. Disponível em: https://rcsdevelopment.org/index.php/edutrend/article/view/1026. Acesso em: 9 oct. 2026.