1. Children\’s age division The age division of children refers to classifying children according to different age ranges, so that parents and educators can understand the physical, psychological and behavioral characteristics of children at different ages, so as to better carry out education. Education and care. Children\’s ages are usually divided into the following stages: 1. Infancy (0-2 years old): This stage is from birth to two years old, and is the happiest and most important period in a person\’s life. During this stage, children go through many physical and cognitive developments. 2. Preschool children (3-6 years old