REMAWATI, D., Sandradewi, K., Irawati, T., & Fitriasih, S. H. (2024). Clustering of Mathematical Skill Improvement for Children with Special Needs Using K-Means Clsutering: A Case Study at Mutiara Al Islam Therapy Surakarta. Ittishal Educational Research Journal, 5(2), 1-16. https://doi.org/10.51425/ierj.v5i2.84