Diary of scientific knowledge 200 words

1. Diary of Little Scientific Knowledge in Volume II of Grade Three.

Diary of scientific knowledge in the second volume of the third grade 1. The composition "scientific knowledge" is 300 words.

I like scientific knowledge best, which is very attractive. Books always show us scientific knowledge with cartoons and short stories in life, which will not only make you laugh, but also increase your knowledge.

Since reading the book Scientific Knowledge, I feel that my thinking is much more flexible, and I seem to have a golden key to open scientific knowledge in my life and study.

I remember my 10 birthday, my mother bought me some scientific knowledge. I jumped three feet happily and said, "thank you, mom!" " Say that finish, he quickly ran into the room and sat down. He looked intently and forgot everything around him.

I don't know how long it took, but my cousin patted me on the shoulder and I woke up like a dream. He said, "My father bought two big carp, which were alive and kicking just now. But as soon as I put it in the jar, I killed one, saying it didn't die like death. I don't know what happened. Come and have a look. " I followed him out to have a look, and it happened. I can't help but think of what I just read in Scientific Knowledge: If a fish looks dead, but it doesn't, then putting some salt in its mouth can make it regain consciousness. I decided to have a try. Sure enough, after tasting the salt, the fish took a few sips of water and shook its tail. It was all right after a while, as if nothing had happened.

I love scientific knowledge, and I am eager to learn more scientific knowledge!

2. The third grade science diary of primary school students 100 words is urgently needed.

Test results on July 4th Today, I got the final exam results. I am very nervous and scared, because if I don't do well in the exam, I will be scolded by my parents! The test paper was issued, and both English and math were good, but I got 89.5 points in Chinese. Fortunately, I am excellent, so my mother won't scold me! Alas, my Chinese grades are so poor this time! I like to help my teacher on the 7th and 5th. I'm going to clean this afternoon. I'm listening to the school radio. Guo Qingwen asked me to help Miss Lin. Besides me, there are three students.

Come to the office, make arrangements when you arrive, and then do something else. Mr. Lin was very happy after we finished. He gave each of us a notebook and invited us to eat ice cream.

Teacher Wen said that she would come to help her tomorrow afternoon. We are all very happy! I like helping teachers on July 6th. This afternoon, all of us came to help again. The teacher asked me to arrange the quality manuals of the whole class according to the student number, and then let us put some awards on the ribbons and flowers. We went to the broadcast room again and cut out some teachers' comments and posted them in the manual.

Seeing that we were tired, the teacher invited us to eat watermelon. Finally, Mr. Lin, let's move the box to the "accounting room" and come home soon! Composition books are in my home, and most of them are composition books, because I like to treat them as documents. Of course, I have seen most of them! I like reading fictional articles because they are interesting.

I don't like reading a landscape article because it is complicated and meaningless. The content in the composition book is really rich! July 12, sweeping (drying) clothes. Today my mother asked me to (sweep) clothes. I don't want to? Finally I reluctantly agreed! Come to the washing machine on the balcony, there are so many clothes in it! I picked up clothes and a hanger, put the clothes neatly in the hanger, and then swept (dried) the clothes on the sweeping (drying) rod with a fork.

According to this method, I quickly swept (dried) all the clothes. Although it is tiring work, I like to sweep (dry) clothes when I see them neatly! It's really fun to go shopping tonight. Tonight, I go shopping with my mother. (Not far away) The street is crowded with people, many people, and even many people pass by! My mother picked out clothes at a stall, looked around again and whispered to me, "Someone tried to rob my wallet just now!" " "I'm scared, grab my mom's bag and be careful! Mother bought a big bag of jelly in Li Ka-shing and a bag of pomegranate outside.

We came to the door of Huiwanjia, found an "ice porridge" shop and asked for a bowl of "ice porridge" here. My mother said to buy a flashlight and let me wait for her when I eat here. I only ate a little ice water, and my mother came out. We went home happily! Buffet Today, Dad's friend invited us to a buffet (the friend's house also went). I listened, don't mention how happy I am! Came to a village called Baxi 0? What happened? ————‖‖‖‖‖‖‖? Especially one? Yu Yu? "Yi yi suck? ⒑?? [6] Why not fade out? Has the sedan chair returned to Xia Meng? Where's the cloud? Later, I also took a glass of fresh milk and five pitaya! After a while, we all went home happily! My wish I have many wishes, but I don't know if they will come true! I really want to have a TV set, because my mother won't show me TV! I really want to get a hundred points, because I haven't tried this kind of happiness yet! I really want to grow up quickly, because my mother won't let me do some things! On July 24th (1), my brother will be hospitalized for more than a week. This afternoon, because my brother is ill, I will be hospitalized for more than a week. My mother asked me to stay with my cousin, but I refused, so I had to stay at home by myself. Mom gave me two yuan to buy bread! So, mom, dad and brother left! July 24th (2) Lonely After they left, I was very unhappy. What should I do at night? I'm scared! I thought, 5: 45, it's almost 6: 00 (there is a good program at 6: 00)! I called my mother and said I wanted to watch TV. My father promised to go home and turn on the TV for me! After waiting for a long time, dad hasn't come back yet, and the program is about to start! I cried! After a long time, the program is over! In the evening, I finished my dinner, washed the dishes and sat down! On July 24 (3), the miracle suddenly opened the door. When I opened the door, it was Mom and Dad and my brother! But why did you come back? It turned out that because there was no bed, my mother was blown down by the wire frame. Fortunately, the man lost 500 yuan! They are happy to come back, but they will leave again tomorrow afternoon! On August 3rd (4th), I was no longer lonely because I didn't dare to sleep alone at night, so my father went home to sleep with me! & lt3> Then grandma came! Then, the feeling of loneliness disappeared! Typhoon on August 3, it rained heavily today. Grandma said a typhoon was coming. Then she helped me add clothes! I turned on the TV and saw the "blue" signal, so I asked my grandmother what was going on. My grandmother said it meant typhoon! I didn't expect this signal in every weather! My Dream Last night, I had a strange dream, and it was very long! I dreamed that my family lived in a big apartment, and I didn't even know where the exit was because I was unfamiliar with it. Later, I asked my neighbors to find an exit! I visited another big shopping mall, which has 600 floors! The mall is too big, and I'm lost again. What should I do? There is a delivery elder sister in front. I know, she took me to the exit! I finally went home, and my dream was over! On August 5, when my brother's eyes were ready to sleep at noon today, I heard him crying. My mother said, "You obviously asked for it. Your eyes are like this. Why are you rubbing ... "I listened and ran to my mother's bed to see, ah, my brother's eyelids are upside down! It's red. It's scary! I was scared and ran back to my room! So protect your eyes in the future! Don't rub your eyes with dirty hands! Happy Day Today, I did some homework, and my mother made me watch TV for half an hour.

I took a nap and my mother played computer games for me. I continued studying for a while, and my mother promised to watch TV for me at 7: 30.

Although today is boring, it is not.

3. The third grade science diary of primary school students 100 words is urgently needed.

Test results on July 4th Today, I got the final exam results. I am very nervous and scared, because if I don't do well in the exam, I will be scolded by my parents! The test paper was issued, and both English and math were good, but I got 89.5 points in Chinese. Fortunately, I am excellent, so my mother won't scold me! Alas, my Chinese grades are so poor this time! I like to help my teacher on the 7th and 5th. I'm going to clean this afternoon. I'm listening to the school radio. Guo Qingwen asked me to help Miss Lin. Besides me, there are three students.

Come to the office, make arrangements when you arrive, and then do something else. Mr. Lin was very happy after we finished. He gave each of us a notebook and invited us to eat ice cream.

Teacher Wen said that she would come to help her tomorrow afternoon. We are all very happy! I like helping teachers on July 6th. This afternoon, all of us came to help again. The teacher asked me to arrange the quality manuals of the whole class according to the student number, and then let us put some awards on the ribbons and flowers. We went to the broadcast room again and cut out some teachers' comments and posted them in the manual.

Seeing that we were tired, the teacher invited us to eat watermelon. Finally, Mr. Lin, let's move the box to the "accounting room" and come home soon! Composition books are in my home, and most of them are composition books, because I like to treat them as documents. Of course, I have seen most of them! I like reading fictional articles because they are interesting.

I don't like reading a landscape article because it is complicated and meaningless. The content in the composition book is really rich! July 12, sweeping (drying) clothes. Today my mother asked me to (sweep) clothes. I don't want to? Finally I reluctantly agreed! Come to the washing machine on the balcony, there are so many clothes in it! I picked up clothes and a hanger, put the clothes neatly in the hanger, and then swept (dried) the clothes on the sweeping (drying) rod with a fork.

According to this method, I quickly swept (dried) all the clothes. Although it is tiring work, I like to sweep (dry) clothes when I see them neatly! It's really fun to go shopping tonight. Tonight, I go shopping with my mother. (Not far away) The street is crowded with people, many people, and even many people pass by! My mother picked out clothes at a stall, looked around again and whispered to me, "Someone tried to rob my wallet just now!" " "I'm scared, grab my mom's bag and be careful! Mother bought a big bag of jelly in Li Ka-shing and a bag of pomegranate outside.

We came to the door of Huiwanjia, found an "ice porridge" shop and asked for a bowl of "ice porridge" here. My mother said to buy a flashlight and let me wait for her when I eat here. I only ate a little ice water, and my mother came out. We went home happily! Buffet Today, Dad's friend invited us to a buffet (the friend's house also went). I listened, don't mention how happy I am! Came to a village called Baxi 0? What happened? ————‖‖‖‖‖‖‖‖? Especially one? Yu Yu? "Yi yi suck? ⒑?? [6] Why not fade out? Has the sedan chair returned to Xia Meng? Where's the cloud? Later, I also took a glass of fresh milk and five pitaya! After a while, we all went home happily! My wish I have many wishes, but I don't know if they will come true! I really want to have a TV set, because my mother won't show me TV! I really want to get a hundred points, because I haven't tried this kind of happiness yet! I really want to grow up quickly, because my mother won't let me do some things! On July 24th (1), my brother will be hospitalized for more than a week. This afternoon, because my brother is ill, I will be hospitalized for more than a week. My mother asked me to stay with my cousin, but I refused, so I had to stay at home by myself. Mom gave me two yuan to buy bread! So, mom, dad and brother left! July 24th (2) Lonely After they left, I was very unhappy. What should I do at night? I'm scared! I thought, 5: 45, it's almost 6: 00 (there is a good program at 6: 00)! I called my mother and said I wanted to watch TV. My father promised to go home and turn on the TV for me! After waiting for a long time, dad hasn't come back yet, and the program is about to start! I cried! After a long time, the program is over! In the evening, I finished my dinner, washed the dishes and sat down! On July 24 (3), the miracle suddenly opened the door. When I opened the door, it was Mom and Dad and my brother! But why did you come back? It turned out that because there was no bed, my mother was blown down by the wire frame. Fortunately, the man lost 500 yuan! They are happy to come back, but they will leave again tomorrow afternoon! On August 3rd (4th), I was no longer lonely because I didn't dare to sleep alone at night, so my father went home to sleep with me! & lt3> Then grandma came! Then, the feeling of loneliness disappeared! Typhoon on August 3, it rained heavily today. Grandma said a typhoon was coming. Then she helped me add clothes! I turned on the TV and saw the "blue" signal, so I asked my grandmother what was going on. My grandmother said it meant typhoon! I didn't expect this signal in every weather! My Dream Last night, I had a strange dream, and it was very long! I dreamed that my family lived in a big apartment, and I didn't even know where the exit was because I was unfamiliar with it. Later, I asked my neighbors to find an exit! I visited another big shopping mall, which has 600 floors! The mall is too big, and I'm lost again. What should I do? There is a delivery elder sister in front. I know, she took me to the exit! I finally went home, and my dream was over! On August 5, when my brother's eyes were ready to sleep at noon today, I heard him crying. My mother said, "You obviously asked for it. Your eyes are like this. Why are you rubbing ... "I listened and ran to my mother's bed to see, ah, my brother's eyelids are upside down! It's red. It's scary! I was scared and ran back to my room! So protect your eyes in the future! Don't rub your eyes with dirty hands! Happy Day Today, I did some homework, and my mother made me watch TV for half an hour.

I took a nap and my mother played computer games for me. I continued studying for a while, and my mother promised to watch TV for me at 7: 30.

Although today is boring, it is not.

4. 100 is enough for the third grade science diary of primary school students, which is urgently needed.

Test results on July 4th Today, I got the final exam results. I am very nervous and scared, because if I don't do well in the exam, I will be scolded by my parents! The test paper was issued, and both English and math were good, but I got 89.5 points in Chinese. Fortunately, I am excellent, so my mother won't scold me! Alas, my Chinese grades are so poor this time! I like to help my teacher on the 7th and 5th. I'm going to clean this afternoon. I'm listening to the school radio. Guo Qingwen asked me to help Miss Lin. Besides me, there are three students.

Come to the office, make arrangements when you arrive, and then do something else. Mr. Lin was very happy after we finished. He gave each of us a notebook and invited us to eat ice cream.

Teacher Wen said that she would come to help her tomorrow afternoon. We are all very happy! I like helping teachers on July 6th. This afternoon, all of us came to help again. The teacher asked me to arrange the quality manuals of the whole class according to the student number, and then let us put some awards on the ribbons and flowers. We went to the broadcast room again and cut out some teachers' comments and posted them in the manual.

Seeing that we were tired, the teacher invited us to eat watermelon. Finally, Mr. Lin, let's move the box to the "accounting room" and come home soon! Composition books are in my home, and most of them are composition books, because I like to treat them as documents. Of course, I have seen most of them! I like reading fictional articles because they are interesting.

I don't like reading a landscape article because it is complicated and meaningless. The content in the composition book is really rich! July 12, sweeping (drying) clothes. Today my mother asked me to (sweep) clothes. I don't want to? Finally I reluctantly agreed! Come to the washing machine on the balcony, there are so many clothes in it! I picked up clothes and a hanger, put the clothes neatly in the hanger, and then swept (dried) the clothes on the sweeping (drying) rod with a fork.

According to this method, I quickly swept (dried) all the clothes. Although it is tiring work, I like to sweep (dry) clothes when I see them neatly! It's really fun to go shopping tonight. Tonight, I go shopping with my mother. (Not far away) The street is crowded with people, many people, and even many people pass by! My mother picked out clothes at a stall, looked around again and whispered to me, "Someone tried to rob my wallet just now!" " "I'm scared, grab my mom's bag and be careful! Mother bought a big bag of jelly in Li Ka-shing and a bag of pomegranate outside.

We came to the door of Huiwanjia, found an "ice porridge" shop and asked for a bowl of "ice porridge" here. My mother said to buy a flashlight and let me wait for her when I eat here. I only ate a little ice water, and my mother came out. We went home happily! Buffet Today, Dad's friend invited us to a buffet (the friend's house also went). I listened, don't mention how happy I am! Came to a village called Baxi 0? What happened? ————‖‖‖‖‖‖‖‖? Especially one? Yu Yu? "Yi yi suck? ⒑?? [6] Why not fade out? Has the sedan chair returned to Xia Meng? Where's the cloud? Later, I also took a glass of fresh milk and five pitaya! After a while, we all went home happily! My wish I have many wishes, but I don't know if they will come true! I really want to have a TV set, because my mother won't show me TV! I really want to get a hundred points, because I haven't tried this kind of happiness yet! I really want to grow up quickly, because my mother won't let me do some things! On July 24th (1), my brother will be hospitalized for more than a week. This afternoon, because my brother is ill, I will be hospitalized for more than a week. My mother asked me to stay with my cousin, but I refused, so I had to stay at home by myself. Mom gave me two yuan to buy bread! So, mom, dad and brother left! July 24th (2) Lonely After they left, I was very unhappy. What should I do at night? I'm scared! I thought, 5: 45, it's almost 6: 00 (there is a good program at 6: 00)! I called my mother and said I wanted to watch TV. My father promised to go home and turn on the TV for me! After waiting for a long time, dad hasn't come back yet, and the program is about to start! I cried! After a long time, the program is over! In the evening, I finished my dinner, washed the dishes and sat down! On July 24 (3), the miracle suddenly opened the door. When I opened the door, it was Mom and Dad and my brother! But why did you come back? It turned out that because there was no bed, my mother was blown down by the wire frame. Fortunately, the man lost 500 yuan! They are happy to come back, but they will leave again tomorrow afternoon! On August 3rd (4th), I was no longer lonely because I didn't dare to sleep alone at night, so my father went home to sleep with me! & lt3> Then grandma came! Then, the feeling of loneliness disappeared! Typhoon on August 3, it rained heavily today. Grandma said a typhoon was coming. Then she helped me add clothes! I turned on the TV and saw the "blue" signal, so I asked my grandmother what was going on. My grandmother said it meant typhoon! I didn't expect this signal in every weather! My Dream Last night, I had a strange dream, and it was very long! I dreamed that my family lived in a big apartment, and I didn't even know where the exit was because I was unfamiliar with it. Later, I asked my neighbors to find an exit! I visited another big shopping mall, which has 600 floors! The mall is too big, and I'm lost again. What should I do? There is a delivery elder sister in front. I know, she took me to the exit! I finally went home, and my dream was over! On August 5, when my brother's eyes were ready to sleep at noon today, I heard him crying. My mother said, "You obviously asked for it. Your eyes are like this. Why are you rubbing ... "I listened and ran to my mother's bed to see, ah, my brother's eyelids are upside down! It's red. It's scary! I was scared and ran back to my room! So protect your eyes in the future! Don't rub your eyes with dirty hands! Happy Day Today, I did some homework, and my mother made me watch TV for half an hour.

I took a nap and my mother played computer games for me. I continued studying for a while, and my mother promised to watch TV for me at 7: 30.

Although today is boring, it is not.

5. Require a composition of scientific knowledge in the third grade of primary school, with more than 4oo words.

Recently, I read a book about revolutionary war, called Red Rock, which described many revolutionary heroes: they were fearless when they entered the post and regarded death as death; Xu Yunfeng fought bravely against the enemy and sacrificed himself for others; Jiang Jie was tortured and never afraid; Liu Siyang was born in a rich family, but took part in the revolution; Cheng Yao grew up under the influence of * * * and knew how to deal with all kinds of things. The friends in the slag hole help each other and outsmart the enemy; The people of Baigongguan defeated the enemy and ushered in the new China.

In Hongyan, I admire Jiang Xueqin Jiang Jie the most. Shortly after the beginning, Jie Jiang's steel image has been established in my mind. When she learned that her husband had passed away, she didn't become vulnerable to the cruel reality like an ordinary woman, but dried her tears and stood up again, because she knew that the order entrusted to her by * * * had not been completed, and she would give up her family for everyone. During her life in Zhazidong prison, she still wore that blue cheongsam and always greeted everyone with a clean face. She didn't reveal any party secrets when the enemy tortured her. When the enemy nailed her finger with a bamboo stick, she firmly said, "Torture is too small a test, the bamboo stick is made of bamboo, and the will of the staff is made of steel."

In the face of these respected comrades, * * * can only give them physical torture, but can't shake their spiritual points. In real life, I feel deeply guilty in front of them. Whenever I encounter a small setback, I will think of giving up. After reading Hongyan, I know that the harder the road is and the more arduous the task is, the more determined we must be.

The book Red Rock has given me great inspiration. I know that the vibrant scene we live on now is bought by countless soldiers with blood, so we should cherish the happy life now and never forget those great soldiers and keep them in mind!

6. Seek the diary of scientific observation in the third grade of primary school.

Strawberry fruit. On Saturday, April 9, it turned sunny to cloudy in the morning. When I came to the yard, I was pleasantly surprised to find that the strawberry was bearing fruit! Look, the fruit is like a cone, red and bright, wearing a small green hat on her head, as if she was worried that the sun would shine on her face, and it also exudes a fresh Xi 'an from time to time, which is really attractive! "Mom and Dad, come and see, the strawberries are bearing fruit!" I couldn't restrain my inner joy and cried in the yard.

Mom and dad came out to watch strawberries with me. They all have smiles on their faces You know, this humble little strawberry was bought by my mother at my suggestion, and it was only my father and I who cultivated it with one hand that it thrived and blossomed until today.

Her little fruit contains her mother's love, her father's sweat and my hope. Strawberry fruit, what a celebration! In the afternoon, the weather turned cloudy.

Suddenly I found that there were bugs on strawberries, soft-shelled bugs, about half the size of mung beans, six thin legs and white all over! Ahem! This damn bad thing! It wriggled on the stems and branches of strawberries, not moving for a while, and obviously sucking the juice of strawberries there for a while. I was so distressed that I took a bamboo stick to pick bugs and pulled down a dozen in one breath.

But there are still so many, what should I do? I'm so anxious, please call my father at once. Father frowned, brought a bottle of insecticide and sprayed it with a small sprayer. I looked at it: Ha, the worm huddled and rolled down! I was so happy that I hugged my father and shouted "Long live".

Looking at the strawberries that have grown again, I feel happy. Yes, at the moment of success, nothing can be relaxed, otherwise it will fall short. Strawberries are like this, but aren't other things like this? .

7. Small scientific discovery (composition) Grade 3

"All reasoning must be emphasized, and observation and experiment can lead to it" was written by Italian writer Galileo. You got it? You got it? I know, I know, because I have made scientific discoveries. Do you want to know? Let me tell you something!

That was, when I was in the sixth grade of primary school, one day I was watching TV at home, and suddenly a big green headline attracted me. I looked at it and wrote, "Do you know the way to keep an egg from breaking when it falls from a tall building?" So I want to understand this problem! Find out! It wasn't long before I finally knew how to keep the eggs from breaking.

One afternoon, I took an egg, carefully took it to the balcony and slowly threw it down. As a result, the egg broke with a bang. I was not convinced and started the second time. This time, I wrapped the egg with a piece of cloth and threw it down slowly. This time, I didn't hear the sound of broken eggs. I rushed downstairs happily and opened the cloth. It was still broken.

8. Write a scientific knowledge in life in the third grade composition of primary school.

The science around you

Why does milk have a layer of skin after heating?

The skin floating on the surface of milk is solidified, protein. Milk contains the place where cattle grow and develop.

There are essential nutrients, and protein is one of the most important nutrients.

Once heated, protein will solidify. Boiled eggs will solidify because they are inside.

Protein is solidified. Protein in milk will also be solidified by heating.

Protein, especially protein of milk, will solidify as soon as it goes bad even if it is not heated. protein

Acid will be produced after deterioration, and acid can solidify milk. Although yogurt solidified by lactic acid bacteria can be eaten, it is better not to eat naturally deteriorated and solidified milk, because we don't know what kind of bacteria it will contain.

Why do water droplets splash in hot oil?

The suitable temperature for frying food in oil is generally around 160℃~200℃. At this time, just wait.

In order to put a small amount of water attached to food into high temperature at once, we know that water boils at 100℃

Teng. The boiling of liquid is vaporization. At this time, its volume has not only changed greatly, but also changed greatly.

It changed in a short time.

A small amount of Ben enters a large amount of high-temperature oil, and the water will explode and vaporize. That's it, CHO.

The oil around was splashed, so the phenomenon of "oil splashing" appeared.

Explosive is a kind of violent explosive. It can explode because the main component of explosives is nitroglycerin.

It consists of carbon, hydrogen, nitrogen and oxygen. When these things explode, they are all caused by drastic chemical changes.

The volume of generated gas suddenly increases and explodes.

When frying food, a small amount of rapidly evaporating gas stirs up the surrounding liquid in a very short time, resulting in the phenomenon of "oil leakage".

9.400 words scientific common sense composition

Give you a straw, an ordinary straw for drinking fruit juice, and give you a potato, a fist-sized potato just bought from the vegetable market. Excuse me: can you penetrate potatoes with a straw?

Can't! You could say that. What would happen if you were given an auxiliary tool-a cup?

I was reading a popular science magazine at noon today and saw an article entitled "Penetrating potatoes with straws". I find it incredible. Potatoes are hard, that fragile straw ... think about it, and I think of that classic.

The advertising slogan "Anything is possible". So I prepared the experiment with the mentality of overthrowing this statement and witnessing the miracle. To tell the truth, I am extremely ambivalent, but most of them still can't do it. Seeing is believing, and then driven by curiosity, I found a cup, a potato and a straw.

I first put the potato rack on the cup, then grabbed the straw with four fingers of my right hand, then buckled the top of the straw with my thumb, and finally stuck it hard-the straw Huo Ran passed through the potato.

I can't believe I rubbed my eyes, but I still kept the graceful posture of straw and potatoes. I still don't believe it. I think of magic, which reminds people that when they see it with their own eyes, they will have hallucinations. I don't believe my eyes anymore. I called my mother, and she didn't believe me, but we changed straws, potatoes and cups. We did several experiments and the results were the same. I have to believe it's true.

Later, I understood that the key of this experiment is to fasten the top of the straw with your thumb. In this way, the straw cut off from the airflow becomes extremely hard enough to penetrate the potato.

I have to admit how ridiculous my "hypothesis" was before the experiment. A slender straw really has the ability to penetrate potatoes.

This little experiment woke me up. In life, how many "impossibilities" exist only in the brain and not in the real world. And I, because of the "impossible" in my heart, missed many opportunities to try!

When the straw penetrated the potato, it also penetrated the prejudice in my heart. Science is around us, we should learn to try to believe!

10. Scientific composition

After reading 100,000 Why, I think this set of books is very good. This set of books includes mathematics, physics, chemistry, animals, human science, earth science, universe science and environmental science.

Volume, information science volume, engineering science volume and index data volume. 100,000 Why is very suitable for teenagers. There are all kinds of questions and answers in it. For example, why is there a positive value after tossing a coin many times?

The number of times on the front and back is roughly equal. In the process of work or study, there are bound to be some problems. We should read more books like 100,000 Why. With the rapid development of modern science, people have to understand it.

Understanding the world requires more and more scientific knowledge. Under the new historical conditions, if you are ignorant and backward and lack basic knowledge, you may be confused by some fake science and fall into blind superstition. To this end, I

We must strengthen our study, improve our quality and expose the true face of pseudoscience with correct scientific ideas, methods, knowledge and technology.