When facing an animal or an object, the left and right are in the same direction as the observer (obeying the observer), and the object is regarded as a reference, saying that it is on the left or right side of the object. In other words, it seems to be on the side of animals.

When facing the role, the left and right at this time are opposite to the observer's direction. That is, it looks at the right and says it is on the left.

People are different from animals.

Extended data:

Elementary school addition skills:

Division and addition integer addition

For example; 8+5 = 13, first split "5" into "2" and "3"; Then it is 8+2+3 =10;

Change an integer and subtract it.

For example, 26+ 18 = 44. If "18" is changed to "20-2", it is 26+20-2 = 44.

Dislocation number addition

For example, a number plus ten numbers is a number, for example:

5 1+ 15=66; This is calculated as follows: 5+ 1 6; 1+5 gets 6; Put it together in groups of six.