MARZUKI, HASRATUDDIN, SUMARNO. Mathematical Thinking and Self-Concepts of Elementary School Students in Geometry Through 4C-Based Problem-Based Learning. International Journal of Special Education, [S. l.], v. 41, n. 2, p. 463–479, 2026. Disponível em: https://www.internationalsped.com/index.php/ijse/article/view/4752. Acesso em: 30 sep. 2026.