Nuril Lutvi Azizah, et al. “Introduction to Android-Based Numerical Learning at SD Muhammadiyah 2 Waru Sidoarjo”. ABDIMAS: Jurnal Pengabdian Masyarakat, vol. 6, no. 2, Apr. 2023, pp. 3915-20, doi:10.35568/abdimas.v6i2.3335.