RIZKINA, S. IMPROVING COGNITIVE DEVELOPMENT THROUGH PUZZLE PLAYING ACTIVITIES FOR CHILDREN AT IBUNDA KINDERGARTEN MEDAN. Jurnal Ilmiah METADATA, [S. l.], v. 7, n. 2, p. 108-114, 2025. DOI: 10.47652/metadata.v7i2.616. Disponível em: https://ejournal.steitholabulilmi.ac.id/index.php/metadata/article/view/616. Acesso em: 24 jun. 2026.