I saw Teacher Zhu take out two and a half eggshells and a sharpened pencil. The students began to discuss noisily.
Teacher Zhu said, "What experiment can two and a half eggshells do?" The teacher said very seriously, "Now the experiment begins." So the students stare big eyes and look carefully.
I saw Mr. Zhu put two eggshells with one mouth facing up and the other mouth facing down, then picked up the sharpened pencil, held the eggshells with their mouths facing up in his hand and dropped them vertically with the pencil. Once or twice, there was a hole in the eggshell.
Teacher Zhu holds an egg shell in his hand, with his mouth facing down, and lets the pencil fall, once, twice and three times.
It took twelve times to break the shell. Teacher Zhu said, "Students, do you know what this is?" The students said a lot, but none of them were right.
The teacher said to us: "The eggshells on the mouth are concentrated and easy to break;" The egg shell with its mouth facing downwards is arched, and the force is scattered, so it should not be fragile. "I heard, an epiphany.
I think that the hats worn by workers on the construction site are also made according to this principle. Bricks and dangerous things are not easy to get hurt when they hit their heads, and there are arch bridges built by ancient people. Humans are really smart.
2. The first paragraph of the magic egg composition is blank [the wonderful egg of the composition] Oh! I really haven't seen it. It turns out that they are not only different in appearance, but also different in essence ... That day, grandpa bought dozens of eggs, prepared them to give birth to chickens, and wrote wonderful eggs. The shapes of these dozens of eggs can be described as varied, varied and different; And the colors are even more varied: pure white, white with freckles, brown, light yellow, beige, reddish, and a green color-duck egg color. Grandpa put them in a particularly warm room. When I went back to my grandmother's house for dinner tonight, my grandfather excitedly called me to his room to let me have a look at the growth of the chicken. So I turned on the light with grandpa. Grandpa took it and skillfully put him at the convergence point of light. In an instant, everything in the egg, like magic, was seen by my eyes through the eggshell, and it was clear ... with a small red circle in the middle. Grandpa told me that this is a chicken embryo, just formed, and the side is somewhat transparent. Well done! In this way, there will be a strange feeling. Think about my scrambled eggs again. I really want to sigh: different ways will lead to different destinies. The fate of eggs is really in our hands! In an egg, there may be a little life, but they still don't want to come out, playing hide-and-seek with us ... Grade 5, Zhongxin Road Primary School, gaoqing county, Shandong: Zhang Ruixue.
3. Half an eggshell composition in Grade 233
After class, the teacher put his hand into the plastic bag and mysteriously said to everyone, "Do you know what I brought today?" With that, he took out two and a half eggshells and a pencil and put them on the platform. The students looked at the teacher in surprise and thought, "What does the teacher do with a pencil and two and a half eggshells?" The teacher smiled and said, "Do you know what these two and a half eggshells can do?" Wang Zhenxian said, "You can be a tumbler." The teacher said, "What else?" The whole class was silent. Look at me. I looked at you and shook my head. The teacher said, "We are going to do an experiment with these two and a half eggshells and this pencil today." Everyone talked again: "What experiment can this thing do?" First, the teacher put a half-garden eggshell mouth up on the platform, with a pencil in his hand, aiming at the center of the eggshell. When his hand was released, the pencil fell vertically and poked in the center of the eggshell, which was broken. The teacher took out another half-round eggshell, buckled it face down on the platform, and pointed a pencil at the back of the eggshell. When the hand was released, the pencil fell vertically and poked the center of the eggshell, but the eggshell was not broken. "Once, twice, three times ..." The students stared at the platform, stretched out their necks, and counted until they counted eight times before the eggshell was punctured. The students all cried out in surprise.
The teacher cleared his throat and said, "Do you know why?" Someone replied, "I can't hit it because the back is slippery." The teacher said, "This is the knowledge of mechanics. When the pen tip is poked at the bottom of the eggshell with the mouth facing up, the eggshell is easy to break due to the concentrated force. When the pen tip is poked down on the back of the eggshell, because the eggshell is arched, the force will be dispersed, so it should not be fragile. "
What the teacher said reminded the students of many such things, such as helmets, helmets, like the world-famous bridge, which made bridge opening arch. It turns out that these designs all contain mechanical principles! The ocean of knowledge is so vast!
4. Strange egg composition [Strange egg composition] Strange egg
One weekend, Gigi and his classmates went for an outing and wrote a strange composition. In the grass, Gigi accidentally found an egg, similar to a football. Strangely, there are many colorful patterns on this egg. Seeing that there was no one around, Gigi secretly put the eggs into his schoolbag and took them home. I didn't expect that egg to change Gigi's life greatly.
That day, when Gigi came home, he carefully took the egg out of his schoolbag and put it on the table, carefully carrying the egg he had never seen before. When night fell, the room was dark, but the eggs gave off bright light. Suddenly, Gigi found an X-shaped miniature button at the junction of the blue pattern and the red pattern on the top of the egg. He pressed it curiously and the egg split in half. A note popped up inside, which said: This is a magic egg, and people can get special gifts. However, he only belongs to kind people who love to learn. As soon as Gigi finished reading, the light disappeared and the eggs returned to their original appearance. At this time, Ji Ji thought about everything he had just seen in his mind. He asked himself: Is what was just said on the note true? Am I a kind and studious person? In the study and teaching, I fight with my classmates, talk back to the teacher, sleep in class ... At home, I cheat my parents into playing games in the Internet cafe. I threw my neighbor's clothes on the roof ... I'm not a good boy, but can this egg really make people get special gifts? What is the gift?
After a night of deliberation. The next day, Gigi decided to be a kind person. At school, he helps his classmates when they fall. Pick up the waste paper when you see it on the ground; If a classmate cries, he will take the initiative to comfort her; Say hello to the teacher politely ... at home, he doesn't lie anymore. If it rains heavily, he will send his neighbor's clothes home. ...
Classmates say that Gigi has become disciplined, teachers say that Gigi has become fond of learning, parents say that Gigi has grown up, and neighbors say that Gigi is sensible ... Of course, Gigi has heard praise and is getting better and better. In the final exam, he also won the Learning Progress Award and the Outstanding Young Pioneers Award. Ji Ji can't believe everything in sight. He doesn't know that everything in front of him is magical, or that he bought it with his own efforts and sweat. Anyway, he fell in love with this egg.
On the night when he received the prize, the magic egg shone again, and at the same time, the note bounced out of the eggshell. The difference was that the words on the note changed: Do you like him as a special gift for your trophy? You are doing very well. This egg belongs to you. I hope you will work harder in the days to come! Gigi said excitedly, I will, I will! Just when he was surprised, the egg returned to its original state. This magic has changed him and made him a lovely boy. This made him very proud. He is very grateful for this egg. In the next few decades, whenever Gigi opened the egg, the contents of the note in the egg would change constantly, and Gigi always did as the note said. Finally, one day, Gigi became a famous local caring entrepreneur.
Gigi's name is universal in his city. One night, the egg once had light, not blue light, but soft red and blue light alternating. The egg split in two, but instead of a piece of paper, an extremely picky alien popped up. He said, friend, you are great! Now that my task has been completed, I want to return to my planet. Because I want to help 3231313335323635438+034313032313635333e 78988e 69d833133332633339. Wish you all the best! Goodbye! Then, the egg closed and magically disappeared. Ji Ji just stood there, staring at the place where the eggs disappeared. ...
Grade one: Li Mengyuan.
5. Wonderful future of the second grade composition I set foot on a spaceship, crossed just visiting, and came to the future world in 2054.
When I got off the spaceship, I was stunned by what I saw! People are walking up and down the street in colorful iron clothes. Strange, isn't it heavy to wear iron clothes? What is the function of iron clothes? Hey, let's ask someone! I found an old woman, pointed to her iron dress and asked inexplicably, "Grandma, isn't this iron dress heavy to wear?" What does it do? "Grandma kindly replied," this iron dress is unusual! "Its exterior is made of a light multifunctional iron. The inside is soft cloth, which is not only light but also comfortable to wear. It can prevent falling, theft, virus invasion, discoloration and temperature adjustment. There are many other functions! Therefore, people call it' multifunctional iron clothes'. " "wow! There is such a magical iron coat! " I can't help admiring.
I thanked grandma and walked on. When I came to the road, I saw vehicles coming and going, speeding on the road, like an arrow leaving the string. I thought: how much gasoline does this cost? It will certainly pollute the environment. I can't help but frown. I quickly covered my nose and mouth with my hand and carefully observed the exhaust pipe of passing vehicles. Well, I see a filter with a diameter of about 2 cm in the exhaust pipe of the vehicle. After the exhaust gas from the car is filtered by the filter, it becomes pollution-free gas, and there is no more annoying exhaust gas!
I let go of my hands, breathed fresh air and walked on. On the way, I threw a paper ball at random. At this time, I saw a green trash can coming to me quickly in the distance, stopped in front of me and said to me, "Little friend, please put the paper ball you just threw into my mouth." I can't believe it's true. Trash can not only walk, but also talk. I picked up the paper ball I just threw and put it in the trash can. "Children, it is everyone's responsibility to pay attention to hygiene." Say that finish, the trash can began to patrol the street again. God, can the trash can talk and walk? I was too surprised to speak for a long time. ...
Unconsciously, I set foot on the spaceship again and returned to 20 16.
6. Wonderful imagination of the second grade composition, wonderful imagination
One day, I invented a treasure, a robot called a working robot.
Because there are too many homework these days, many people can't finish it, and they are often criticized by teachers, so I invented this robot. This robot is amazing. As long as you enter your font, open the homework page, put it in the back pocket of the robot and press the start button, it will start to help you with your homework. It was finished in less than 20 seconds, and it was written quickly and accurately. The font is still your font. Now that you have a homework robot, you don't have to worry about homework or write. If you want to write, there are tens of thousands of words of homework, and the robot only needs to scan for a few seconds, and the eyes will know what to write. Tens of thousands of words will soon appear in front of you, even if you are short of time, that is, dozens of seconds.
Just when I was happy, it suddenly occurred to me that I was thinking, alas! We still have a lot of homework in front of us! But I believe that with the progress and efforts of new China and the development of science and technology, this small wish will come true.
7. Imagination composition in the second grade of primary school: Magical house I designed a magical multifunctional house.
This kind of house can be large or small. There is a button in the corridor outside the door. As soon as you go out, cross the corridor and press that button, the house becomes a box as big as an ink bottle. You can put it in your pocket to prevent theft. When you want to enter the house, press the red button on the box, and it will become a big house for people to live in.
It can not only become bigger and smaller, but also become cars, boats, planes and submarines! If your family travels, you can turn the house into a car or a plane. If you are in Shanghai, you can also turn it into a boat and submarine and enjoy the scenery in the sea.
The interior of this house is also great. When you leave school, you walk into the door of this house, which guesses your thoughts. If you are tired, hot and thirsty, when you sit on the sofa, the door will send a message to the sofa, and the sofa will stretch out two robot hands from behind, one hand will help you fan the wind and the other hand will help you deliver water. When you are very cold, guess that the door of your mind has input information to the heating, and the heating will automatically adjust to your comfortable temperature.
The walls of this house can not only absorb carbon dioxide, but also release oxygen, making the air in the house as fresh as the air in nature. The lights in the house turn off automatically. When it gets dark, the lights in the room will automatically turn on, which is much more convenient.
If only the house I designed could be used all over the world!
8. The wonderful imagination of the second grade composition 100 words is now 3003, and I have lived for another hundred years. Now China has undergone earth-shaking changes and become the most developed country in the world.
I bought an ordinary time shuttle with 20 billion yuan. Because I didn't read the instructions and my driving skills were not good, I accidentally shuttled to the dinosaur era. I touched the injured * * * and muttered, "Where is this?" Suddenly, I felt countless pairs of eyes staring at me from behind. They were discussing, "Well, do you think this guy should steam or stew?" I jumped into the shuttle in fright. At this speed for a year, I estimate that I can almost win a sprint champion. Maybe I was too scared. I pressed the "straight" button at once and hit a planet, which made it out of orbit and headed straight for the earth, leading to the extinction of dinosaurs. Maybe this is what happens when you want to eat me.
I pressed the "Auto" button to make the space shuttle fly automatically. Then I opened the Romance of the Three Kingdoms, which I bought with 20 yuan just before boarding the plane, and read it. But I accidentally dropped the book from the broken window, and a man named Zhuge Liang found it. This book made him the smartest man of his time, because he already knew the future and the past.
I dare not fly again, because I did two things wrong. If I do one more wrong thing, I will be punished. I was hungry on the way back. I opened the apple in my bag. There was a rotten apple in it. I threw it away when I looked uncomfortable. As a result, I bumped into a man reading under a tree, reminding him of the gravity of the earth, thus creating the law of universal gravitation and becoming a scientist.
I made three mistakes in this time travel, which is not allowed by law. So the judge punished me to go to this primary school in Chongqing, hoping I could reflect on it.