Dian, Dian, Henie Hikmah Mediani, and Minnatillah Minnatillah. 2022. “Brain Games and Gymnastics on Increasing Concentration Power of Early Childhood”. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini 6 (6):5615-20. https://doi.org/10.31004/obsesi.v6i6.2487.