The best way to draw pictures for second grade elephants

The best way to draw an elephant in the second grade is as follows:

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"Weighing an Elephant" is a historical story from the Three Kingdoms period, telling the story of Cao Chong's use of Mathematical principles of substitution of quantities to determine the weight of an elephant. This article has been selected into unit 10 of the second volume of the Beijing Normal University edition of the second grade primary school textbook.

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Once, Sun Quan of the Wu Kingdom gave Cao Cao an elephant, and Cao Cao was very happy. On the day the elephant was transported to Xuchang, Cao Cao led all the civil and military officials and his youngest son Cao Chong to see it together. None of Cao Cao's people had ever seen an elephant. This elephant is tall and big. Its legs are as thick as the pillars of the main hall. If someone comes close to compare, they can't reach its belly.

Cao Cao said to everyone: "This elephant is really big, but how much does it weigh? Which one of you can name it?" Hey! How do you call such a big guy? The ministers all discussed it one after another.

One said: "The only way to weigh is to build a scale with a big top and a big top." And another said: "What a big scale we need to build! Besides, the elephant is alive, so There's no way to weigh it! I think the only option is to kill it and cut it into pieces." As soon as he finished speaking, everyone burst into laughter. Everyone said: "This method of yours is really stupid! Isn't it a pity to kill the elephant alive just to weigh it?"

The ministers thought of many ways, one by one. None of it works. It’s really embarrassing. At this time, a child walked out of the crowd and said to Cao Cao: "Father, I have a way to call an elephant." Cao Cao saw that it was his most beloved son Cao Chong, so he smiled and said: "You little one I'm young, what can I do? Tell me if it makes sense."

Cao Chong said it. Upon hearing this, Cao Cao applauded repeatedly and ordered his left and right officials to immediately prepare for the weighing of the elephant. Then he said to the ministers: "Let's go to the river to watch the elephant weighing!" The ministers followed Cao Cao to the river. There was a big boat parked in the river. Cao Chong asked someone to take the elephant onto the boat. When the boat was stable, he carved a track on the side of the boat at the water level.

He then asked people to bring the elephant to the shore, and load stones of all sizes onto the boat one by one, and the boat sank bit by bit. When the ship sank to the point where the lines carved just now were as high as the water surface, Cao Chong asked people to stop loading stones.

The ministers opened their eyes wide and couldn't figure out what was going on at first. When they saw this, they couldn't help but praise: "What a way! What a way!" Now everyone understood that as long as the rocks in the boat were removed, Weigh them all and add up the weights to find out how heavy the elephant is.

Cao Cao was naturally even happier. He narrowed his eyes and looked at his son, and then looked at the ministers triumphantly, as if he was saying in his heart: "You are not as smart as my little son!"