1 to 12 months, the baby has mastered turning over and can sit up. Crawling is the main form of exercise at this stage. Children can make more sounds during the learning stage. Having been able to distinguish strangers, the baby is eager to contact with the outside world and start purposeful learning.
2. From 12 years old to 18 months, the baby gradually learns to walk, from wobbling to being able to walk independently. After 1 year-old, he began to have an impression on the world he knew and began to express his eyah.
3, 18 to 24 months, the baby can start trotting at this stage, the hand movements are more flexible, and it can be said that short and intermittent sentences.
From 4.24 to 30 months, the baby will start to speak sentences with 3 to 5 vocabularies. This period is a period of rapid development of baby's language.
5. The age is 30 to 36 months. At this stage, it is mainly to do all the work well in entering the park. I can complete a series of actions by myself, and my life knowledge, language ability and social skills are basically developed, and my understanding of the rules is gradually clear.