Rusnaini. “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), vol. 7, no. 1, June 2026, pp. 45-52, doi:10.56667/jveit.v7i1.2283.