Animals and people judge the left and right direction: first determine the reference object, and then determine whether the described object is above or below the reference object. Based on the reference object, the direction facing the reference object is forward, and the direction facing away from the reference object is backward. The left hand is on the right and the right hand is on the right.

The positional relationship is relative and is determined by the reference object or observation point. When determining the left and right, the observer's left and right are generally taken as the standard, but it is still necessary to classify and discuss according to the attributes of the observed object.

Practical application of left-right judgment;

When the problems involved are not related to the left and right of people and animals, and there is no clear and specific reference, parents are often confused by such topics. The observer should prevail, and the characters in the picture should prevail.

For example, taking the observer as the standard, there are five people on the left of the child holding the balloon; If the balloon child in the picture is taken as the standard, there are two people on his left. The clearest reference standard is as clear as case B.