There are differences in age.
Small class children: 3-4 years old; Middle school students: 4-5 years old; Children in large classes: 5-6 years old. With the growth of age, children's abilities and needs are constantly changing.
The characteristics of learning situation are different.
Small class: children know the world mainly through sensory organs and need more demonstration and guidance from teachers; Middle class: children begin to accept instructions from adults and can complete some simple tasks; Big class: The children gradually show their autonomy, and the activities are mainly based on independent exploration. The teacher only needs a little guidance.
There are differences in learning content
Small class: learn basic life skills, such as eating, sleeping and going to the toilet; Middle class: cultivate listening ability, learn and perform with peers, get a preliminary understanding of the humanistic environment of the community, and learn social skills; Large class: focus on learning the basic knowledge of mathematics and Chinese, and lay a solid foundation for learning in primary school.