Siti Qomariah, Luluk Iffatur Rocmah. Abacus Games Foster Concentration and Socioemotional Skills in Early Childhood: Permainan Abacus Membantu Mengembangkan Konsentrasi dan Keterampilan Sosial-Emosional pada Anak Usia Dini. acopen [Internet]. 2025 Jun. 21 [cited 2026 Feb. 28];10(1):10.21070/acopen.10.2025.12305. Available from: https://ojs.umsida.ac.id/index.php/acopen/article/view/12305