No matter in study, work or life, everyone will come into contact with composition more or less. Composition writing is an important means to cultivate people's observation, association, imagination, thinking and memory. . So, how to write an essay? Below is a 500-word essay on an interesting lesson that I collected and compiled. I hope it will be helpful to everyone. An interesting lesson composition of 500 words 1

"Ding-a-ling-ring, ding-a-ling-ring"! The class bell rang, and the students rushed into the classroom.

Everyone is looking forward to the arrival of the English teacher. Suddenly, someone comes! Everyone stared at her intently, full of doubts: Who is she? She seemed to have a pair of Sun Wukong's piercing eyes. She could see through our thoughts and said: "Hello! I am your English teacher this semester. My surname is Shen. You can call me Teacher Shen or Miss Shen."

In the process of learning English, we not only learned how to read and write, but also had a lot of fun.

One Fun: Burying Landmines

The teacher said to us: "Let's play an interesting game 'Burying Landmines'. I believe everyone has played it!" We all said in unison: "Played!" Rule: The teacher puts a mark under a certain word, and that is a landmine. After erasing the marks, as long as a student reads the word that contains the mine, they will immediately "detonate" it. To begin, the mines are A, C, and F. In the first game, a few students detonated landmines - "Three two one, boom!" In the second and third games, landmines detonated one after another. After the game, some students proudly showed off to everyone, while others were dejected as to why they were so careless, and some stomped their feet angrily. This game is really so-called "shattering the world and making ghosts and gods cry"!

Second Fun: Drumming and Passing Flowers

After the first game was over, the teacher took us to the next game: the teacher started passing flowers from one group to another, and when the teacher called stop , the person who gets the flower has to read the words ordered by the teacher, and if he can't, he has to perform a rooster laying eggs. The game started, and the flowers were slowly passed around, until they reached Xiaoxia. She passed the flowers to Xiaotian with lightning speed at the critical moment. The teacher clicked a word with the pointer, and he couldn't understand it, so he had to Perform on stage. The students laughed so hard that they smacked the desk, and Xiaotian also laughed shyly on the podium. There was laughter in the classroom.

After class, the students reluctantly said to the teacher: "Teacher, goodbay!"

This English class is really interesting! An interesting lesson composition of 500 words 2

This afternoon, it was drizzling, but this did not affect my excitement at all, because I was going to Boda to tutor my composition.

When I first entered the Boda composition class - Zhongda Garden. It was like I walked into an ocean of knowledge. As the bell rang, the long-awaited composition class began, which was about finding coins.

The coin search began, and the teacher invited the first "little scout" Zhang Yan. He went up with confidence, and as soon as he came on stage, he stared at the trash can. He hunched his back and walked towards the trash can, his eyes still scanning the ground, looking for the shadow of coins. When he came to the trash can, he carefully looked inside and outside the trash can, and then picked up the fire extinguisher next to the trash can, but found no clues. , at this time Zhang Yan was a little downcast, and finally returned to his seat with his head lowered.

Next up was Zhang Lei. She looked east and west, but she gained nothing. The students were all talking and talking: "Trash can, trash can, it must be in the trash can!" Zhang Lei listened to the students' cries and really went to look for it in the trash can. At this time, she found a waste paper next to the trash can. Paper, I saw her picking up the waste paper, looking at it, looking at it again and again, she tore the outer paper apart, and saw that there was still a paper ball inside, maybe because she thought it couldn't be inside! I threw it away without even looking at it carefully. Looking at her absent-minded look, I guess she can't be found. Then the teacher invited Sun Huilin, the disciplinary committee member of our class, to come. She was clever and found the paper ball that Zhang Lei had just thrown down. She picked it up and opened the paper again. "Thump thump thump thump" the coin came out. She raised the coin excitedly. He's so tall, he looks like a magician. The students below applauded her happily.

It seems that there is a lot of collective wisdom! When we do things, we must unite, cooperate and observe carefully. As the saying goes, three cobblers are only as strong as Zhuge Liang. Only through unity can we get things done. An interesting lesson composition of 500 words 3

Interesting stories from childhood are like the stars in the sky that you can’t even see and count. Today, let me pick the biggest and brightest star and give it to you.

Today, the teacher was teaching us in the classroom. The teacher said: "Today we are going to play a game." Hearing this sentence, the quiet classroom became lively. Do you want to know what this game is called? ? It's called "Drawing a Nose."

First of all, the student Liu Yang came on stage. The teacher asked him to close his eyes and turn left and right three times. After he finished turning, the teacher covered his eyes. He walked like a crab. He was crooked, but with the help of the teacher, he walked to the blackboard. The noise from his classmates made him panic. Even I felt a little pity for him. Finally, he drew his nose to the bottom of his face, which made the classmates The whole room burst into laughter.

After a while, the teacher asked for someone again. Unexpectedly, the teacher asked me, "Haha, it's time for me to show off my skills." I turned left three times, turned right three times, and just finished turning , I was so dizzy that I almost fell. I walked step by step to the blackboard and prepared to draw a nose on this face. Just when I was about to start drawing, the shouts of my classmates made me extremely nervous. At this time, the boys shouted "Left! Left!" and the girls Shouting: "Go to the right! Go to the right!" I thought to myself, "Huh! I don't believe boys. The classmate Liu Yang just was tricked by them. Girls are more reliable." I followed the girls' guidance and painted my nose. Come out, hey, why does it look so strange? It turned out that I drew the nose between the eyes, which made the students laugh. Later, other students also wanted to play. This was really an interesting lesson!

This incident taught me that some things may seem simple, but they are really difficult to do. An interesting lesson composition of 500 words 4

Last Friday, Teacher Zhang told us the good news, and the whole class became active. What is the good news? It turns out that Teacher Xiao Tan from Beijing is coming to give us an astronomy lesson!

On Monday, we came to school and were ecstatic. At noon, a middle-aged man with good features and dignified appearance walked into our classroom. ah! It’s Teacher Xiao Tan! The class started, and we saw Teacher Xiao Tan taking out many strange-shaped stones from a silver box: some were uneven; some had different patterns; some were small and exquisite...

At the beginning, the teacher picked up a big stone and asked the students to touch it and guess the weight of the stone. It happened to be our group that was called. It was like dozens of rabbits were hopping around in my heart. When it was my turn, Teacher Xiao Tan asked: "Are you nervous?" "Nervous!" I said. The teacher touched my hand with the stone and then took it back. Finally, he put the stone into my hand. I estimated and said: "1550 grams." "1551 grams!" The teacher's voice became much louder. I returned to my seat and thought, the teacher's voice was so loud, my answer should be correct.

Then the teacher talked a lot about meteorites. What impressed me most was the game session. The teacher first asked a question: "Which planet is closest to the earth?" Some students in the class sat motionless with their chins in one hand, as if they were thinking about their appearance; Some students looked at the ceiling, as if wondering whether their answers were correct; some students sometimes frowned, sometimes licked their dry lips; some students tapped the table lightly with their pens, as if they were thinking about the problem. The answer... "Venus!" said a classmate. "Correct answer!" the teacher shouted with a smile.

This is a very intentional lesson. It opened up my understanding of astronomical knowledge and my desire for knowledge about the universe! An interesting lesson composition of 500 words 5

Today, our class carried out an interesting activity.

First, the teacher writes a word and asks the students to say a four-character word containing this word. The teacher first wrote the word "white" on the big screen. The students saw how simple it was and raised their hands one after another. "Bright and radiant", "Growing old together"... You say one thing, and I say another, tit for tat. The teacher wrote another word "日", and immediately many little hands were raised in the classroom. "The rising sun rises in the east", "Every day changes with each passing day", "Hou Yi shoots the sun"... No one wants to give in to anyone else, and they all want to score more points for their own team. Later, we made up idioms for "depending on", "mountain" and "end". The students kept chattering like sparrows. After finishing speaking, I glanced at the blackboard and said, "The sun will end on the mountain." Ah, it turns out that the teacher asked us to compose phrases for ancient poems.

The number composition begins. The first one is "one", and everyone rushes to raise their hands. Lin Chen volunteered and said "clearly" and "wholeheartedly". Cai Xing didn't show any weakness and said three words in one breath: "One word is worth a thousand dollars", "One cut in two" and "Serious". Zhang Zhe also blurted out without thinking: "Exactly the same" and "Kill two birds with one stone". I was so impressed that I thought: There are so many idioms in their stomachs...

The most difficult one is the "sheep" in the idioms of the twelve zodiac signs. Some of the students frowned and thought hard, some scratched their heads and ears, and some stared with bated breath, as if trying to choke out an idiom. Later, the teacher reminded me: make up for it before it is too late. The students were suddenly enlightened and regained their energy from the previous state. Xia Wei came up with idioms such as "the sheep's intestines," "the sheep falls into the tiger's mouth," and "the sheep falls easily." Everyone cast envious glances at him.

This class is really interesting. It seems that we have climbed to the top of the mountain all of a sudden and enriched our knowledge. We have gained so much! An interesting class composition of 500 words 6

Some people like Chinese classes, some like math classes, some like art classes... but I like food classes.

This morning, the teacher from Aizhijia gave us a cooking class, which was about making dumplings. We put on our kitchen clothes and hats and started studying. Teacher Li Jing asked us to stand next to the long table and watch her roll out the dough. Teacher Li Jing rolls out the dough very quickly! I saw her grabbing a small piece of dough, pressing it down lightly with her left hand, and the small dough turned into a small round cake. Then her left and right hands worked at the same time. She held the edge of the round cake in her left hand and kept turning it, and she held the rolling pin in her right hand and kept crushing the round cake. In the blink of an eye, a piece of dumpling wrapper was lying on the panel. Wow, this is great craftsmanship! I watched with envy, so I picked up the rolling pin and rolled out the dough as usual. After a few moments, the dough stuck to the rolling pin like a piece of dog skin plaster. I tried to peel it off with my hands, but the dough cracked. Looking at the "injured" face, I was a little overwhelmed, and the teacher Li Hong next to me patiently taught me how to solve it. With the help of the teacher, I successfully rolled out a piece of intact dough. Looking at my work, I feel so happy!

Next I started to listen to the teacher teach me how to make dumplings. With the palm of his hand facing up, Teacher He used a spoon to scoop up a spoonful of dumpling filling and put it in the center of the dumpling wrapper. Then he folded the dumpling in half and pinched it skillfully with the thumb and index finger of both hands. A chubby dumpling appeared in front of us. I followed Teacher He's example, scooped up a spoonful of dumpling filling and put it on the dumpling wrapper, eh? What's going on? Why can't you always cover it? Teacher Wang looked at it and said, "You put too much meat stuffing." After hearing this, I put less stuffing. After wrapping it in this way, a "medium-sized" dumpling will be lying in the palm of my hand. "It's so interesting!" I couldn't help but exclaimed when I saw my food creation, and I felt very happy, as if I had won a lottery.

This interesting food class not only allowed me to eat delicious dumplings, but also taught me how to make dumplings. I like this kind of food class very much! An Interesting Class Essay 500 Words 7

The class bell rang, and the teacher strode onto the stage, then raised a piece of cardboard with a fox painted on it and asked: "Students, what is painted on this?" "What?"

"Fox." Everyone answered in unison.

"I said it was a goblin." The teacher said. After hearing what the teacher said, we all opened our eyes wide and were surprised.

The teacher continued: "In rural areas, this phenomenon often occurs. Some people are sick and do not go to the hospital for treatment, but instead go to a witch. The witch will lie to him and say that there is a demon possessing him. So I made some pretense of exorcising demons, burned incense and kowtowed to pray for the blessings of gods. Are there really ghosts and gods in the world?" Some students shook their heads, and some were dubious.

The teacher said again: "If you don't believe it, please look at this piece of paper and see that it is a vixen." We laughed. The painting is clearly a fox, so how can we say it is a leprechaun? How interesting!

The teacher said seriously: "Okay, now I will kill the monster for you to see!" The teacher took out a kitchen knife from the basin filled with water and chopped it towards the fox's neck. . Suddenly, the fox's body was really "blood" flowing.

"Students, do you know why this is happening?" the teacher asked. "Maybe the color of the fox has faded." "What else?" The classroom was silent, and everyone frowned.

"Let me tell you." The teacher explained, "My basin of water is not an ordinary basin of water, but a basin of alkaline water. I sprinkled some phenolphthalein on the fox beforehand. The combination of alkaline water and phenolphthalein will turn red. This is called a chemical reaction. You will learn this knowledge when you enter junior high school." After hearing these words, the students suddenly realized.

Finally, the teacher also told everyone: "There are many phenomena in nature that people can't explain yet. So some people with ulterior motives make up ghosts and monsters to scare people. Witches are Taking advantage of people's weaknesses to deceive those who don't understand science. Therefore, we must work hard to learn scientific and cultural knowledge, believe in science, and get rid of superstition."

This is really an interesting moral lesson! An interesting lesson composition of 500 words 8

Today, the composition class is going to play an exciting game - drawing noses.

The teacher drew a face on the blackboard. The strange thing is that the face has eyes and a mouth, but no nose. Just when we were all puzzled, the teacher spoke: "The name of this game is called nose drawing. The rules are to cover your eyes with a towel, turn around three times, then go to the podium, and use chalk to draw noses on people's faces." Draw a nose on it, and you will win if you draw it in the right position." The students were eager to try, and they all raised their hands and shouted: "I'll come first, I'll come first."

The first student to draw a nose. Feng Yi'er, she was blindfolded, and after spinning around three times, she stumbled onto the podium, picked up the chalk and started drawing on the blackboard. Before she could finish the painting, her classmates were already laughing so hard. She hesitated and started painting again in another place. After just drawing a stroke, the students laughed even more happily. Some female students asked others to rub their bellies; some male students laughed so much that they pounded the table and the stools. Feng Yier knew that he had made the wrong drawing again, so he simply stopped doing it and kept doing it. , changed positions again... This time, some students even laughed so much that they slipped under the table.

Ha ha! The face painted by Feng Yi'er has five noses on one face! Some grow on the forehead, some grow on the eyebrows, some grow on the eyes, and some even grow on the neck, but there is no growing on the middle of the face! In the end, even she couldn't help but blush after seeing her own work.

The second student who painted his nose was Wu Yixuan. He walked onto the podium gropingly and almost tripped over a dog chewing mud. He took the chalk and started drawing confidently. Appear confident. As soon as he finished the painting, warm applause broke out. He was the first person to draw correctly.

The last classmate to draw a nose was me. I picked up the chalk, my heart pounding. I walked onto the podium cautiously, thinking: Come on! come on! Be sure to draw it correctly. When I finished drawing, the students were swaying from side to side and laughing so hard. I hurriedly took off the towel and took a look, only to realize that I had painted the nose on the mouth!

Happy time always flies by. I am so happy in this class! An interesting class essay 500 words 9

This afternoon, the teacher gave us an interesting class class. The game in the class class is one-two-three wooden figures. The rule is that you can't move or laugh after the teacher turns around. Whoever moves or laughs loses, and whoever touches the teacher's back first wins. The teacher divided us into two teams, one was called the "Don't Laugh to Death" team, and the other was called "Praise to Laugh in the Heart and Stop Smiling on the Face".

The game has begun. After the teacher said "start", some students took a few steps forward, some stayed still, some lay on the table, some sat on chairs... We were like cheetahs waiting for opportunities. I want to touch the teacher's back. The teacher saw that we were neither moving nor smiling, so he thought of a clever plan. Then she kept telling jokes and laughing "haha". After laughing for a few minutes, someone from the Never Laugh team finally couldn't help it anymore and started laughing too. Therefore, the Swear to Die team lost because of this student’s lack of determination.

My favorite is the third game of this game, because in this game the teacher also sent the players who were eliminated in the first two games to make us laugh. Sometimes they laugh "haha" next to other people's ears, and sometimes they blow in front of other people's faces... That posture is like playing monkey tricks. However, the team that was fooled was very determined and tacitly used distraction methods to hold back their laughter. In the end, they failed to make anyone laugh until the bell rang, so they had to return to their seats in frustration. At the same time, a burst of earth-shattering laughter burst out in the classroom. After waiting for so long, we can finally laugh.

Ah! What an interesting class! I hope the teacher can take a class every week for us to play, because this will not only increase our knowledge, but also relieve the pressure of learning, thus making us enjoy school more. An interesting lesson composition of 500 words 10

Today, as soon as I walked into the classroom, there was a burst of music. The melody of the music is so nice and the lyrics are so familiar. We were so fascinated that we remained motionless and listened attentively. I listened so seriously that even Xiaogang, the "naughty ghost king" in our class, fell silent. Later, we listened carefully and found that the teacher was playing "Descendants of the Dragon". Accompanied by the singing, the teacher told us that today we are going to visit the paradise of dragons, to learn about dragons, to feel dragons, and to feel the infinite charm of Chinese traditional culture!

The game has begun. The first round is a series, and the teacher asks each group to choose a representative to "battle". I am the representative of our team, and the representative of the Zero Clan is Xiao Hong. At the beginning, the teacher asked me to go on stage to say a few words. I changed "Longmen Formation is short of people - I can't put it up" into "Sheng Qi". "Humph, I don't accept it," I said. The teacher said: "If you don't accept it, you have to work harder next time!" In the end, I made two mistakes, Xiaohong also made two mistakes, and we were tied.

The second round begins, which is about idioms containing the word dragon. "The finishing touch", "Yes", "Ye Gong is very fond of dragons", "...", everyone talked and started talking over each other. The classroom fell into chaos. "Quiet!" The teacher shouted, finally making the classroom quiet. Our group won the final competition.

The game is still going on, and the excitement continues to be staged. In the game, some perform "tornado" like dancing; some perform "dragon boat racing" back and forth like a desperate Saburo; and some perform nothing like a goose. Every performance brought us bursts of laughter.

This class is really interesting. Not only did it make us feel happy, but it also taught us a lot about dragons, making us proud to be the descendants of dragons. I love the mighty dragon in mythology. Love our People's Republic of China even more. An interesting lesson composition of 500 words 11

As a real Tongxiang native, I can’t speak the local dialect, which makes me a little ashamed.

A few days ago, my mother took me to participate in the community’s “Dialect School” activity.

At the beginning, the teacher clicked on a "family song" that we are most familiar with, and everyone sang along (in Mandarin) with great interest.

Then, the teacher showed us a table with the dialect versions of the names of family members written on it. She pointed to the blackboard and said: "Children, look, this is a table of relationships between people. Who can say it in dialect?" ?" A boy raised his hand high and said slowly with a blushing face: "Grandma is 'Empress', sister is 'Ada', grandpa is '嗲嗲'..." "That's right." The teacher praised, "These are relatively simple and won't trouble you. Next, let's learn a few more difficult ones." The teacher smiled and pointed at the words "Serving Egg Soup" and said, "'The eggs must be boiled.' Xu Zhixin, please read it again." Because I felt guilty and was afraid that my weird pronunciation would cause laughter, I softly said: "It's hot." Sure enough, several classmates nearby laughed. .

The teacher said seriously: "Don't laugh. Mandarin can take you far, but dialect can teach you not to forget where you started from; Mandarin allows you to communicate smoothly, and dialect can make you feel Infinite warmth."

The teacher called several students, but their pronunciation was not very standard. When they learned a word, the classroom became excited. The teacher also smiled and said: "It seems that there are still many students who don't know how to say it. Let's recite it again and play - Bai Xiang, time - Chenguang..." We were very involved in learning, as if a new door had been opened!

Following the dialect, the teacher took us to recall our childhood and relive the game of "Zhou Zhou".

When I got home, I shouted to my father: "I'm going to be a prime minister tomorrow!" My father was so surprised that he asked me where I learned it. "Hey, you didn't expect it. I participated in a dialect activity today. Of course the teacher taught me!" I smiled triumphantly.

Dialects record the customs and customs of a place and describe the etiquette and culture of each place. I feel the fun in it, and I will try to use dialects as much as possible in my future life. An interesting class essay 500 words 12

Today I had a very interesting class.

The teacher taught us a lot of new knowledge in class and gave me a new understanding of Chinese. In the past, in Chinese class, the teacher would only explain the paragraphs of the text and the meaning of words and sentences. I always thought that Chinese was just a small thing and I just needed to copy it by heart. But after taking Teacher Le’s class, I changed my mind—— It turns out that Chinese can also have so much knowledge.

During class, Teacher Le taught a lot of new knowledge: for example, the central idea of ??the article was created to let people understand the principles of being a human being; reading the composition emotionally can help you appreciate the composition on a deeper level and make the composition more enjoyable. It is easier to understand; the techniques in reading during exams can be accumulated just like ordinary reading; writing is not about talent, but about feeling and writing from your feelings.

I also learned a lot of truths in class. Teacher Le said it well: "Learning Chinese is learning to be a human being." We must learn to use different attitudes to label our moods and lives. This is how we can One hundred and eight generals were produced. We have to learn to feel life, and then we have insights. We need to become giants of thought, and this is how we create mindful experience. Being a good teacher and a helpful friend are closely related to being a good person and language.

In this class I met the One Hundred and Eighth General for the first time. They are divided into two types: emotion and reason. They have many names: such as life, beauty, happiness, health, tolerance, respect, mentality, habits... Each card is a story, each card represents an emotion, and they guide us in how to write essays. , they influence how we feel. Grandpa Ba Jin said it well: "I write not because I have talent, but because I have feelings..." Only by using emotions correctly can we go further and further on the road of composition.

This interesting class made me understand Chinese again. It made me know that only "sense" can lead you on the right path of literature. An Interesting Class Essay 500 Words 13

Since school, we have listened to interesting and vivid classes many times, but the most unforgettable one for me is a math class.

That day, Mathematics teacher Liang walked quickly into the classroom with a lesson plan in his hand, and the chatter in the classroom immediately stopped. Teacher Liang said to us: "Students, today we are going to study the fifth unit - tree planting. Please turn the book to page 73." Everyone immediately took out their math books, and only heard a "whistle" in the classroom. The sound of turning books. The teacher said: "Now please do the math for the first question." After a while, Liu Xurui, the student on duty, raised his hand. The teacher said: "Liu Xurui, tell me, for a 600-meter-long road, we need to plant seeds every 15 meters." If a tree is planted at both ends, how many can be planted?" Liu Xurui replied: "40 trees can be planted." Teacher Liang said loudly, "Please draw a picture on the paper." After a while, Liu Zhenglin spoke: "Teacher Liang, no, it should be 41." Teacher Liang said with a smile: "By the way, what we are going to talk about today is the principle of 'cutting two and adding one'. Now, please discuss in the group and see if you can get more ”

After intense discussion, our group came up with three ideas: 1. When both ends are not planted, the tree is equal to the number of segments minus 1; 2. When only When one end is planted, the tree is equal to the number of segments; 3. When both ends are planted, the tree is equal to the number of segments plus 1.

At this moment, Teacher Liang gave an order: "Okay, stop!" The students in the front row turned their heads and looked at Teacher Liang with their eyes. Teacher Liang said: "Which student is willing to come to the blackboard and write down the ideas summarized by your group?" Everyone rushed to raise their right hands, and Teacher Liang nodded to Wu Songyang, the leader of our group. Wu Songyang quickly wrote the results of our group's discussion on the blackboard. Teacher Liang said: "It's well written. Please copy these three laws into the textbook." At this time, a classmate spoke: "Teacher Liang, why is the number of broken trees equal to the number of broken ones?" We At first glance, it turned out that it really was the word "break", and the whole classroom burst into laughter.

Jingle bell, jingle bell... The bell rang, and the class was over. This is really an unforgettable math class! An interesting class composition of 500 words 14

The first class in the afternoon is science class. Teacher Wang told us in the previous class that we would do experiments in the next class. Out of the desire to do experiments, I returned to the classroom early before the bell rang.

"Ding-ding-ding-ding", it's finally time for class. The students returned to the classroom one after another and prepared for class. After a while, Teacher Wang came and saw a big green basket in her hand. The students immediately started talking excitedly. Finally, the classroom became quiet, and Teacher Wang gave each of us a small box in the basket. I couldn't wait to take it apart and found some red and blue iron blocks inside. The teacher asked: "Does anyone know what the iron blocks in the box are?" The students were silent. After a while, finally One classmate stood up and said, "This is a magnet." Oh, it turns out this piece of iron is called a magnet! Other students suddenly realized. Teacher Wang asked us to look at an illustration in the textbook, which showed a train suspended on the rails, and asked us to talk about what Yue discovered. The answer of most students is that this train can fly. Teacher Wang shook his head and said: "This train is not flying, but uses the principle of magnets with like poles repelling each other and opposite poles attracting each other." I asked doubtfully: "Teacher, what is the principle of 'like poles repel each other, different poles attract each other'" Extremes attract'? "Teacher Wang told us: "Like poles repel, that is, putting the same poles of the magnet together will produce mutual repulsion; unlike poles attract, that is, putting two different poles of the magnet together, will produce mutual attraction. power. "

After saying that, the teacher asked us to verify it. I couldn't wait to put the red end of one magnet against the iron blue end of the other magnet. Suddenly, like a pair of invisible big hands, The two magnets were tightly squeezed together; I put the red poles of the two magnets together. Strangely, there was a deep ravine between them that could not be crossed, but they refused to be forced together. , as soon as you loosen your hand, they will pop away immediately.

It turns out that magnets are so magical that they are indistinguishable from each other when they meet the opposite sex; there are endless anecdotes about this in the scientific world. Interesting fact, this is something I didn’t know before. “The road is long and long, and I will search up and down. "An interesting class composition of 500 words 15

In the composition class today, the teacher walked up to the podium mysteriously with a bag in his hand and said to us: "Today we are going to do an experiment and let the quail eggs... Float in the water. The students watched curiously how the teacher performed the experiment.

The teacher took out a quail egg, a plastic transparent cup, a chopstick, a small spoon and a bag of salt from the bag.

The experiment began. The teacher first took a cup and filled it with more than half a cup of water, and then put the quail eggs into the cup. The quail eggs slowly sank to the bottom of the water. Then, the teacher said to the students: "Everyone, watch, I want the quail eggs to float on the water." My classmates and I all looked at each other with doubtful expressions. The teacher didn't say much. He scooped a spoonful of salt into the cup with a small spoon and stirred it with chopsticks. The quail eggs didn't move at all. The teacher added another spoonful of salt and stirred it, but the quail eggs were still lying on the bottom of the water, refusing to come up. I was really worried that the experiment would fail and the quail eggs would not float. Later, I saw the teacher adding salt and stirring again and again, and a miracle finally happened - the quail eggs really floated on the water!

After completing the experiment, the teacher told us the principle of why quail eggs float. The teacher said that water is buoyant, so when we swim, we will feel our bodies floating upward involuntarily. Quail eggs begin to sink to the bottom of the water because the quail eggs are heavy and the buoyancy of the water is small. Adding salt to the water increases the buoyancy, so the quail eggs can float.

Today’s interesting composition class not only taught me how to write compositions, but also taught me a little bit of scientific knowledge. What a great harvest!