ERNA SUGIARTI; AHMAD YULIANTO. Peningkatan Kemampuan Operasional Penjumlahan Dan Pengurugan Siswa Dengan Benda Kongkrit. Journal Sultra Elementary School, [S. l.], v. 4, n. 1, p. 364–368, 2023. DOI: 10.64690/jses.v4i1.371. Disponível em: https://jurnal.yayasanmeisyarainsanmadani.com/index.php/JSES/article/view/371. Acesso em: 15 aug. 2026.