NYAING. Efforts to Improve the Ability to Understand the Extent of Trapezium and Kites in Mathematics for Class V Students at SD Negeri I Dadahup Academic Year 2017/2018 . Jurnal Pendidikan, [S. l.], v. 21, n. 2, p. 127–138, 2021. DOI: 10.52850/jpn.v21i2.2026. Disponível em: https://e-journal.upr.ac.id/index.php/JPN/article/view/2026. Acesso em: 22 jul. 2024.