BAGUS ISWANTO, B.; WAHYU WIDODO, D.; NUR FARIDA, I. Designing the Educational Game "Calcuboy" for Children Aged 4 to 7: A Case Study at TK Dharma Wanita 1 Tarokan and SDN Tarokan 1. Nusantara of Engineering (NOE), v. 7, n. 2, p. 242 - 249, 8 Nov. 2024.