MARTIANI, R.; PUTRA, D. A.; MARTATI, B. Use of Fractional Tangram Concrete Media to Improve Critical Thinking Skills of Grade IV Elementary School Students. Education Journal : Journal Educational Research and Development, [S. l.], v. 10, n. 1, p. 107–123, 2026. DOI: 10.31537/ej.v10i1.2955. Disponível em: https://jurnal.unipar.ac.id/index.php/ej/article/view/2955. Acesso em: 26 feb. 2026.