A math story of the first grade of primary school
Legend has it that the ancient Greek king wanted to make a pure gold crown exactly like Tyre's crown, so he called a clever jeweler, explained his wishes and asked him to weigh all the gold. After a while, the jeweler delivered the crown as scheduled, with a magnificent appearance, exactly the same as Thiel's crown, and the same weight as the stolen gold. The king gave the jeweler a large reward according to his initial promise.
But the jeweler acts like a liar. Will the gold taken be stolen and mixed with other metals? Facing this golden crown, the king's heart suddenly turned cold! But how can we judge whether gold is adulterated without melting the crown? How can such a beautiful and brilliant crown be melted again? The king struggled with this difficult mystery day and night, and finally fell ill.
Finally, he summoned Archimedes. Archimedes was the cleverest man at that time. The king gave him this difficult problem: to test whether the crown is made of pure gold, but it is not allowed to damage the crown at all. Archimedes thought hard and tried everything, but he still failed to uncover the secret of the crown. He forgot to eat and sleep, and took a bath to cure diseases. He was so addicted to it that he even dreamed that Archimedes was unkempt. A few weeks later, his wife drove him into the bathroom. When Archimedes was immersed in the water, he suddenly felt that he had lost weight. As long as he exerts a little force, his body can float. At this time, his head was covered with gold and silver from the Crown King jeweler. The body sinks and floats for a while, and the water level in the bathtub rises and falls for a while.
Archimedes suddenly turned over and jumped up, shouting: there is a way, there is a way! Without clothes on, I went straight to the palace naked, leaving wet footprints on the road.
Do you know what Archimedes got from the buoyancy of water?
Solution: Archimedes took a container full of water and put the crown into the water according to the principle that the fluctuation of the body in the bathtub caused the water level to rise and fall, and the water in the container would inevitably overflow. He collected the spilled water in another container.
Then he put a piece of pure gold as heavy as a crown into a container full of water and collected the spilled water. If the crown is made of pure gold, the water spilled twice should be equal, but the water discharged from the crown is different from that of pure gold, which means that Wang Guanzhong has mixed substances with different proportions from pure gold, so it is concluded that the golden crown is adulterated. Archimedes finally solved the problem. The cunning goldsmith was punished for this.
Math Story of Grade One in Grade Two Primary School
On Sunday, A Xing's family went out for an outing on his father's motorcycle. Everything in the suburbs at the end of spring is full of vitality, green mountains and green waters, birds and flowers. A Xing is lying on the grass, too busy to take care of this beautiful spring, feeling distressed that he can't help Kakashi find energy. Dad's words made A Xing see hope again. Dad checked the fuel tank and said, you have to add gasoline when you go home, or you can't ride a motorcycle tomorrow. A Xing said excitedly, Dad, go home and give me some gasoline. Dad flatly refused. What does the child need gasoline for? No eating, no playing! A xing can't tell the secret of the alien Cacaci, but can only say: I just want a small glass, and I need to do experiments with gasoline in science class. Dad just agreed.
As soon as I got home, my father took out a few bottles of gasoline to refuel the motorcycle. A xing is anxious to get it. Dad changed his mind and said, unless you can answer my question: my motorcycle is out of gas now. If I pour four bottles of gasoline, the weight of the car is 133 kg. If I pour seven bottles of gasoline, the weight of the car is 139 kg. Can you find out the weight of a motorcycle and a bottle of gasoline?
A xing thought for a while and said, it's too simple! Use (139-133) (7-4) = 2kg, and then use 133-24 = 125kg. Each bottle of gasoline weighs 2 kg, and the motorcycle weighs 125 kg! Dad praised happily: A Xing has made great progress in mathematics during this period! A Xing proudly said: Of course, Kaka teaches me math every day! Dad: We should thank Kakashi for bringing him home one day! A Xing knew that he had slipped his tongue and was afraid to answer, so he poured some gasoline into his study and began to experiment with Kakashi.
Math Story of Grade Three and Grade One in Primary School
Xiao 1 was swept into the sky by the strong wind. He turned countless somersaults in the air, dizzy, completely raised his consciousness and fell straight from the air. It is too dangerous! Seeing that the little character 1 is about to fall to the ground, it's too late to say it. At this time, a white cloud suddenly floated in the distance, gently holding the little word 1. Little 1 lying in Baiyun's arms, slowly waking up. He opened his eyes and looked down: "What is this place?"
Bai Yunbian said softly when he fell, "This is a beautiful digital city."
"Ah, digital city, how beautiful!"
Looking around, I see:
The "1" building towering straight into the sky is the building of a digital city;
"2" Palace floats on the water like a duckling;
"3" shopping malls seem to be big ears that only attract the wind, listening to the most beautiful music;
The "4" buildings are one after another, like colorful flags fluttering in the wind;
The "5" office building is inhabited by businessmen, and the designer skillfully designed it into a "scale hook" shape;
The "6" gymnasium where the sports referee lives is designed to look like a whistle;
Building 7, shaped like a sickle, was built for the grandfathers who moved into the city;
The "8" building is built like a gourd, designed for the most knowledgeable teachers and scientists;
It's a "9" building, as high as a net bag for catching moths. These are the five famous hotels. ...
Ah! The digital city is so charming that the small word 1 is simply stunned.
At this time, a lot of Chinese characters "1" came out of the "1" building. They lined up, holding hands and singing digital songs. ...
1 Like a small club head, 2 like a duckling swimming in the water;
3 like a big ear, 4 like a small flag fluttering in the wind;
Five characters are like small scales, and six characters are like small whistle;
7 like a sickle in your hand, 8 like a gourd;
Like a small net bag, there is a lot of knowledge in the digital city.
The word 1 listened and stood up suddenly and suddenly.
Not good! Baiyun accidentally let the small 1 word fall straight.