Hia, Ika, and Amin Harefa. 2023. “Analysis of Difficulties in Understanding Mathematical Concepts In Class VIII Students of SMP Negeri 2 Hiliduho in the 2022/2023 Academic Year”. Edumaspul: Jurnal Pendidikan 7 (2), 5730-34. https://doi.org/10.33487/edumaspul.v7i2.7425.