Kusumaningrum, B., Irfan, M., Puspita, Y. A., Harini, E., Djufri, E., & Bergman, L. (2026). Students’ reasoning patterns in solving statistical data problems at the junior high school level: An APOS perspective. Jurnal Elemen, 12(1), 21–33. https://doi.org/10.29408/jel.v12i1.30955