Analisis Pemahaman Materi Himpunan pada Siswa Sekolah Dasar. Catha : Jurnal Penelitian Kreatif dan Inovatif , [S. l.], v. 3, n. 2, p. 16–23, 2026. DOI: 10.31004/catha.v3i2.174. Disponível em: https://j-catha.org/index.php/catha/article/view/174.. Acesso em: 3 may. 2026.