Agustina, Rima, Nina Ikhwati Wahidah, Irma Ayuwanti, and Tim Bordasch. “The Effect of the Simple Soroban Application on Students Mathematics Learning Outcomes”. Jurnal Pendidikan Matematika (JPM) 12, no. 1 (April 24, 2026): 48-58. https://doi.org/10.33474/jpm.v12i1.24822.