2. If the reference object is fruit, animals, graphics, etc. ; Subject to the observer. That is, our right side is the right side of the object in the picture and our left side is the left side of the object in the picture. (Same left and right)
The relationship between two people is relative. When describing the relationship between left and right, a person must be regarded as an observer, which requires children to put themselves in their shoes. Empathy is the difficulty of cognition. For example, facing the mirror, the person in the mirror is opposite to us, left and right.
There is a section in the interesting math column of the teacher's first grade that introduces the cognitive process in detail. I have also communicated with fans' parents, introducing cognition in many directions in combination with life scenes, and encouraging children to describe their positional relationship, such as up and down, left and right.