“Improving The Ability Of Subtracting Small Numbers By Large Numbers Using The Jurang Board Media For 2nd Grade Elementary School Students At Sdn 4 Gondang In The 2024 2025 Academic Year”. Jurnal Ilmiah Mandala Education, vol. 11, no. 4, Oct. 2025, pp. 985-91, https://doi.org/10.58258/jime.v11i4.9366.