Dilvina, Siska, et al. “Analysis of Low Student Achievement in Fifth Grade of Elementary School”. Prisma Sains : Jurnal Pengkajian Ilmu Dan Pembelajaran Matematika Dan IPA IKIP Mataram, vol. 9, no. 2, Dec. 2021, pp. 168-76, doi:10.33394/j-ps.v9i2.4150.