PUTRI, V.M. 2026. VMP Improving the Cognitive Abilities of 4-5 Year Old Children Through Simple Scientific Puzzle Games: Meningkatkan Kemampuan Kognitif Anak Usia 4-5 Tahun Melalui Permainan Puzzel Saintifik Sederhana. International Journal of Emerging Issues in Early Childhood Education. 5, 1 (Feb. 2026).