AHSAN, Fikri Fathony. The Effect of Numbered Heads Together (NHT) on Elementary School Students’ Mathematical Problem-Solving Ability in Geometry. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 10, n. 3, p. 659–670, 2025. DOI: 10.31943/mathline.v10i3.787. Disponível em: https://mathline.unwir.ac.id/index.php/Mathline/article/view/787. Acesso em: 24 dec. 2025.