1. Cognitive education for four-year-old babies Four-year-old babies are a stage of rapid development of cognitive abilities. Parents can promote the improvement of their cognitive abilities by inspiring their babies\’ thinking and cultivating observation skills. , you can use question and answer games to help your baby learn basic concepts such as classification, comparison, and reasoning. You can also take your baby outdoors to explore the natural environment and let them feel the differences between different things. 2. Language education for four-year-old babies Four years old is a critical period for language development. Parents can interact with their children and read pictures.