1. Cognitive education for 3-year-old babies. Around the age of 3, babies begin to become curious about the things around them, and begin to have their own wishes and ideas. Therefore, at this stage, parents can help their babies understand the world through various games and activities. For example, you can read picture books to your baby and teach them basic concepts such as colors and shapes. You can also exercise their spatial imagination and hand-eye coordination through games such as building blocks and puzzles. 2. For 3-year-old babies