Aswara, Indah Anggreini Try. “Pengaruh Bahan Ajar Lap Book Terhadap Pembelajaran Matematika Kelas 1 SD Muhammadiyah 07 Medan Denai”. Journal of Sustainable Education, vol. 2, no. 3, Sept. 2025, pp. 1-8, doi:10.63477/jose.v2i3.262.