This is the simplest math problem. When children learn to know numbers, we will teach them 1, 2, 3 with things around us. ......
In primitive society, in hunting, planting, fishing, gathering and other activities, human beings have to deal with the wild, fish, sticks, stones and so on. Over time, people have an understanding of how much and how much.
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This understanding of logarithm is often associated with physical objects, such as the moon of 1, the eyes, ears and wings of birds of "2".
This is because there is only one moon, people have two eyes and two ears, and birds have two wings. Primitive people also realized that an apple and a sheep are each an individual, three trees and three stone axes, all of which are piles of three people. This is the original concept of number.
Fingers, toes, pebbles, sticks, etc. It was originally used for counting. For 1, 2, 3, and 4 objects, extend 1, 2, 3, and 4 fingers respectively. When encountering 5 objects, extend one hand, and 10 objects extend two hands.
When there are many pebbles, a pile of 10 pebbles is represented by a larger pebble. In ancient China, a small stick made of wood, bamboo or bones was called an abacus. But most primitive people encounter a larger number and are often difficult to distinguish.