Rusnaini 2026. Improving Early Childhood Learning Concentration through Brain Games and Brain Gymnastics: Peningkatan Konsentrasi Belajar Anak Usia Dini melalui Brain Games dan Senam Otak. Journal of Vocational Education and Information Technology (JVEIT). 7, 1 (Jun. 2026), 45–52. DOI:https://doi.org/10.56667/jveit.v7i1.2283.