Small class children
Children in small classes mainly doodle, exercise the posture of holding colored pens and the ability to carry them, and learn the differences of various colors.
Middle class children
The children in the middle class have learned to hold crayons and draw all kinds of lines. Don't go out of line when painting, but have certain aesthetic ability.
Large class children
Children in large classes can use their imagination and create freely, and further cultivate their aesthetic ability and simple use of colors.