Hadiyanti, Yosefin Rianita, and Mayor M.H. Manurung. “A Qualitative Analysis of Students’ Errors in Fraction Word Problems Based on Polya’s Stages of Problem Solving: Evidence from Papua, Indonesia”. Edumatica : Jurnal Pendidikan Matematika, vol. 15, no. 2, Sept. 2025, pp. 308-21, doi:10.22437/edumatica.v15i2.43746.