ANIS, Anis; M ARIF SYARIF H; KISAI, Andi Ali. Improving Children’s Concentration Through Graded Puzzle Games in Group B at KB Nurul Huda. Journal of Learning Improvement and Lesson Study, [S. l.], v. 6, n. 1, p. 56–66, 2026. DOI: 10.24036/jlils.v6i1.227. Disponível em: https://jlils.ppj.unp.ac.id/index.php/jlils/article/view/227. Acesso em: 11 jul. 2026.