REMAWATI, D., Sandradewi, K., Irawati, T. and 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), pp. 1-16. doi: 10.51425/ierj.v5i2.84.