There are several children of different ages, which makes each child have his own unique personality and characteristics.

In this case, we can try to describe their age difference with a concept called age distribution.

First, we can determine the minimum age and the maximum age, and the number of children. Then, we can sort the children according to their ages and calculate the number of children in each age group. This can intuitively see the age distribution of children.

In the age distribution map, the horizontal axis represents the age and the vertical axis represents the number of children in this age group. Through this picture, we can clearly see which age group has the most children and which age group has the least children.

We can also add some statistical indicators as needed, such as average age, median, mode, etc. To further describe the age distribution of children. These indicators can help us better understand the overall age characteristics of children.

Characteristics of children of different ages:

1, 3-6 years old: children of this age are in infancy. They are usually lively, full of curiosity and desire to explore things around them. At this stage, children begin to have self-awareness and social awareness. They like to play and communicate with their peers, and at the same time they begin to show some independence and autonomy. In terms of cognition, they began to learn simple basic skills such as reading, spelling and mathematics, and at the same time began to develop some preliminary problem-solving skills.

2, 7- 12 years old: children of this age are in the middle of childhood, and they usually have more mature cognitive and social skills. At this stage, children begin to pay more attention to their inner world and emotional experience, and may show some self-centeredness and rebellious psychology.

In society, they began to establish closer friendship with children of the same age, and gradually developed some abilities of cooperation and coordination. In terms of cognition, they began to learn more complex subject knowledge and skills, such as science, history, geography and so on. At the same time, they also have some initial critical thinking and problem analysis skills.