Kusumah, I. P.; Wardhani, M. K. Development of an Identification Instrument for Dyscalculia in Early Childhood (Ages 4-6): A Dichotomous Model Three Parameters Logistic Approach in Item Response Theory. J. Pendidik. Dasar Nusant 2025, 10 (2), 421-431. https://doi.org/10.29407/jpdn.v10i2.24794.