Balloon fourth grade composition

In our daily study, work or life, we always touch or use composition. Composition is a transition from internal speech to external speech, that is, from compressed and concise language that we can understand to developed and standardized grammatical structure that others can understand. How to write a good composition? The following is the composition of balloon band 4 that I helped you organize. Welcome to read the collection.

Balloon composition 1 One day, I saw a balloon fall on an improperly placed silver needle and explode. I thought: Why did the balloon explode? I couldn't figure it out, so I did an experiment.

I brought another balloon and a silver needle, trying to verify whether this is the case. I put a silver needle into the balloon and the balloon exploded with a bang.

I tried to add water, soy sauce, monosodium glutamate, or drinks to the balloon, and then I used acupuncture, but the balloon still exploded with a bang, and there was no change before. Just when I was disappointed, I suddenly had a brainwave and came up with a new method: coating transparent glue on the balloon and then sticking it with a needle. At this point, the balloon did not explode, but slowly leaked.

I don't understand: "Why is this?" I thought about it, and finally I guessed there was some gas in the balloon. These gases are very full. The silver needle was used once, and the gas in the balloon leaked too much, so it exploded. If transparent glue is attached, the gas in the balloon will be compressed. If a silver needle is used, the holes in the transparent glue will be smaller than those in the balloon, and less air will leak out. These compressed gases can resist silver needles, so they won't explode.

I can't help but sigh: "How wonderful science is now!"

Today, the teacher said that we should step on balloons in the activity class, and my heart was full of joy.

The teacher took several bags of balloons and put them all on the ground. The balloon floated down slowly from the bag. The game has started. In the first group, Liu Ziting and I went on stage, and our legs were tied together and we stomped hard. I answered a question and stepped on a balloon because I was inexperienced. There are two big brothers here. They also stepped on it hard. They only stepped on four balloons and didn't answer the question. Then big brother and big sister stepped on balloons, stepped on ten balloons and answered seven questions. Liu Zizhen and Wang appeared below, standing on five balloons and answering seven questions. At this moment, Liu cried, crying and saying, "You almost stepped on a balloon. How can you step on it? " Stefanie Guo stepped on the balloon and Liu stopped crying. They stepped on seven balloons together and answered six questions, so we won. There were still many balloons that were not broken, so all the students stepped on them together. Liu Zizhen accidentally stepped on his eldest brother, who didn't say anything. I stepped on it again, and my eldest brother screamed with pain. Finally, all the balloons were trampled. The teacher asked everyone to speak and talk about the feeling of stepping on the balloon. Big brother said, "I'm unlucky, and I don't know which guy stepped on me." At this moment, Liu Zizhen laughed.

Is this game fun? Do you want to have a try?

Balloon fourth grade composition 3 "Wow-""How did this happen?" Screams came from the happy composition class. What the hell is this? Let's have a look!

I saw the teacher holding a balloon in one hand and a needle in the other. The students' hearts were pounding with fear. The students tried to cover their ears. The teacher burst the balloon with a needle. Suddenly, the balloon flew around like a rocket, and several students hid under the table. I was scared and hid in the corner.

After a storm, the students woke up. I hid in the corner and returned to my seat with trepidation. And the teacher is going to explode a balloon many times bigger than just now! But before the balloon burst, the teacher asked us a question: "Will this balloon burst?" The students scrambled to answer, and some said, "I will definitely!" " Just now that balloon burst, it's strange if it doesn't! "Someone said," it won't explode. If it will explode, why does the teacher ask us? "Some students are hesitant and hesitant. Then the teacher said, "Only experiments can prove it! "I saw the teacher put the needle into the balloon. I thought to myself, "It's over!" Several students around closed their eyes. However, the balloon did not explode, but gradually became smaller. Finally, it disappeared. Students are talking about this phenomenon in succession, gaping.

Why didn't this balloon explode? This is really worth studying!

Balloon fourth grade composition 4 came to Little Orange Lamp to study composition today. Today's content is connecting balloons.

When the teacher took out a balloon, the students said, "What is the teacher doing?" ? Do you want us to see who blows the balloon and who blows it big? I'm good at this. ""alas! Heaven knows the earth, you don't know, I don't know, students don't know! "

The teacher asked, "If a small balloon and a big balloon are installed at one end of a plastic pipe, is the big one as big as the small one?" ? Or is the big one bigger and the small one smaller? Or is the little one getting bigger and bigger and the big one getting smaller and smaller? "The students said with one voice," The big one is as big as the small one. "The teacher looked at it (good! ) and said, "OK, let's start a practical activity together!" "Yes!" The students cheered.

In groups of four, we asked the teacher for tools-a plastic pipe and two balloons.

Here we go. I blow the big one, and my deskmate blows the small one, and it's done. I held the mouth of the balloon with two fingers and put it on at lightning speed. We stared at the balloon, the big one became bigger and the small one became smaller. I asked the two people in the back to try again. We blow together, and they put on pipes. The four of us looked at the balloon and felt like "fifteen buckets draw water-".As a result, we were so excited.

This activity made me understand a truth-"Facts speak louder than words".

Balloon composition 5 The balloon used in the experiment in science class turned into a weapon after class, which made us play a unique "balloon war".

I took out the balloon, blew it very loudly, grasped the vent tightly, and quietly went around behind Yin Su to deflate the back of Yin Su's head. With 1 of "pa-",Yin Su was stunned. I quickly jumped out of the classroom and blew the balloon again to take part in the war against Chen Haoran. I hit him with balloons with several classmates, and he was caught off guard. Suddenly, a missile hit me. He is a notorious troublemaker who works during the day and has a strong ability to make trouble. My good man didn't fight you in order not to be the target of everyone. I went out in the best way. He chased me and shot me from time to time. I also fight back from time to time, but I really can't run, so I have to surrender.

Back to the classroom, I want to have a rest. Splash will fall from the sky and drop on my hair and pants. "Ha, this girl is good at water polo." . Ren Kexin! If the tiger is not arrogant, you treat me like a sick cat! How dare you attack me with a water balloon! Listen, I won't take care of you! I blew the balloon again and started to attack. I'm so tired that I can't blow the balloon.

Ding-ding, the bell rang. We sat back in our seats and started another class.

Today, the teacher gave us an interesting lesson. Here's the thing.

In class, the teacher took a lot of balloons and plastic pipes. As soon as the teacher moved them up, the students began to talk, huh? What is the teacher going to do today? God knows!

The activity has begun. I'm in a group with two boys in the front row and my deskmate. Because I can't blow balloons, the job of blowing balloons falls on those two boys, and my deskmate and I just need to hold balloons.

Two boys began to blow balloons. Look at them blowing in high spirits. How about "High Spirit"? Wouldn't it be better to be more specific? When the balloon blows, it happens to be a big one and a small one. We carefully placed the balloon on the plastic pipe and held it tightly with our hands. Just when we were expecting a miracle, the gas suddenly leaked. This can throw a cold water on us.

After countless failures, we finally gained experience. How did we finish it smoothly? ) the result is amazing. I held the balloon and waited quietly. After a while, the image of the small balloon gradually becomes smaller; But the big balloon is getting bigger and bigger, and I think, huh? Why do small balloons get smaller and big balloons get bigger? Later, the teacher answered our questions. It turned out to be related to the pressure caused by skin thickness.

Through this incident, I understand that nothing can be whimsical, but I have to do it myself. Today's class really taught me a lot.

Balloon composition 7 "La la la la, I am a happy little rabbit ……" The little white rabbit is wearing new clothes and jumping in the forest with a big red balloon in his hand.

Suddenly, a whoosh of wind blew, and the little white rabbit didn't hold it tightly, and the balloon in his hand floated away. The white rabbit was caught off guard and could only watch her baby fly away. It was so sad that it began to cry.

The cry of the little white rabbit attracted a little white dove, who said to the little white rabbit with concern, "Little white rabbit, why are you crying?" Who bullied you? "The little white rabbit wiped the tears on his face, pointed to the sky with his finger and sobbed," My balloon was blown away by the wind. "Hearing this, the little white dove quickly comforted the little white rabbit and said," Don't cry, isn't it just a balloon? "I'll get it back for you."

With that, the little white dove soared into the sky and disappeared.

Not long after, I saw a white shadow falling from the sky with a perfect balloon in my mouth. Yes, it's a little white dove!

The little white dove handed the balloon to the little white rabbit, who took it, danced happily and said, "Thank you, thank you!" " Little white dove said shyly, "Help others to be happy." "

From then on, the white rabbit and the white dove became good friends.

The first class this afternoon was Chinese, but it was changed to balloon class. In class, our class is very excited. Some jump around, some walk around and so on. ...

When Teacher Tong came in, the classroom was suddenly silent. Teacher Tong said, "Let's blow balloons and play with balloons in this class." Teacher Tong said, and the first game began. For each big group, choose the strongest person to compete. As soon as they came on stage, Teacher Tong said, "Whoever blows the balloon first will win. The contestants began to blow with different balloons. After begging the ocean to take a deep breath, they immediately blew and blew, begging the ocean and others to turn purple. Let the ocean take a breath first, then take a breath, and continue to blow. Suddenly, the ocean balloon burst unconsciously. The second group jumped up with excitement, especially Zhu, who seemed to be the happiest person in the whole group. Teacher Tong asked Haiyang to say his acceptance speech. He only said two words: "confident." Applause broke out in the class at once.

The balloon meeting ended successfully.

Balloon composition 9 is a widely used game, which is not only fun, but also can set off the atmosphere, so it is accepted by many entertainment programs and literary evenings! As an interesting toy, "balloon" was once very popular with children. Balloons were rare at that time, and of course no one wanted to step on them. Even if a balloon accidentally bursts, it will be sad for a long time. With the rapid development of material level, the output of balloons has exceeded the demand, so it has been widely used in the entertainment field, and games such as darts shooting balloons are also common. Here I will focus on the fun game of stepping on balloons.

The reason why I focus on telling you about the fun balloon riding game here is because it is interesting, simple to carry out and more interactive between people. Not only brought joy to everyone, but also promoted everyone's ability to unite and cooperate.

An interesting hot air balloon trip can involve two to eight people at the same time. Tie three balloons to everyone's feet. After the referee gave the order, he began to step on the opponent's balloon. When the balloons on both feet are trampled, leave immediately, otherwise it will be considered a foul. Within the specified time, the team with the most balloons left wins. Does it feel simple and fun? If you like it, start with friends!

Balloon composition 10 Today, our teacher Lemon came into the classroom with a smile and said happily to us, "Students, today the teacher learned a magic trick. I want to show you. I can charge the balloon. Do you believe it? " As soon as the words were finished, the students began to talk. "How to charge the balloon? Where does the electricity come from? I don't believe it at all anyway. "

"all right." The teacher said, "Since you don't believe any of them, just watch." Now the teacher begins to perform, and we hold our breath. Everyone in the class stared at the teacher for fear of bumping into their eyes, as if their eyes were popping out.

I saw the teacher tied a knot with two newly inflated balloons in his hand, then connected them with a rope, then rubbed them on his head, and then gently lifted the rope in the middle of the balloons. I saw two balloons, one on the left and the other on Wang's side. We smiled knowingly. Later, Mr. Lemon put a hard board between the two balloons, and then the two balloons clung together like close friends.

We scratched our heads and asked the teacher what was going on. Why do balloons change like this? The teacher said, "It's very simple. Balloons are made of rubber. Rubbing rubber with something like hair will generate static electricity. These two balloons have the same charge, so they will repel each other. The hard board will attract the electricity on the balloon, so the balloon will stick to both sides of the hard board.

This experiment made me understand that science and life are closely linked.

Balloon fourth grade composition 1 1 Last National Day, my father bought me a balloon. I blew on the balloon and threw it up, but it floated down. I asked dad, why can't balloons fly to the sky? Dad said, "Let's do an interesting experiment. You will understand after doing the experiment. "

Dad told me to clean a bottle, cut off some waste battery skins and toothpaste skins with scissors and put them in the bottle. Then he brought some hydrochloric acid for cleaning the toilet and slowly poured it into the bottle. Interestingly, the toothpaste skin and battery skin in the bottle will emit many bubbles when they encounter hydrochloric acid. Dad asked me to put the deflated "balloon" on the bottle mouth. The gas in the bottle kept going into the balloon, and the deflated balloon expanded again. Tie up the balloon, throw it up, and the balloon will fly into the sky.

I asked my father, "Why did the balloon fly into the sky this time?" Dad pointed to the bubbling bottle and said, "Hydrochloric acid contains hydrogen. When it meets zinc in battery skin and toothpaste skin, a chemical reaction will occur and hydrogen will be released. Hydrogen is lighter than air, and the balloon is full of hydrogen, so it flies to the sky. "

I jumped up happily: "I see, I see, I see why balloons can fly into the sky."

Balloon fourth grade composition 12 "Point to the left, point to the right." What noise is there in the classroom? Look at the door, oh! It turns out that they are playing a balloon-stepping competition!

The rules of the game are as follows: everyone ties a balloon to their feet. Step on someone else's balloon, but protect your own balloon. The man with the balloon won. The students can't wait to have a try.

Later, the teacher took out dozens of balloons that had been made. They are getting more and more crystal clear in the light. Purple is like grapes, red is like apples and blue is like blueberries. The whole classroom became a balloon world.

Fierce competition has begun. First up is our women's five. I thought: will it be difficult for so many people? My first goal is Zhou Zhou. Because I think she is quiet and should be easy to deal with. I pressed her step by step until I came to the corner. I was about to step on it when she deftly lifted her leg and dodged a bullet. The students off the field are cheering: "Come on! Come on! " Maybe Chen chen thought he couldn't beat him, so he made an alliance with me. Finally, we defeated Zhou Zhou.

Next is the short boy group. Although they are short, they are all flexible. After a fall, I got up, and the game was still going on fiercely. ...

This game is very interesting, it makes me understand that only courage and wisdom can do things well!

Balloon Fourth Grade Composition 13 Today, Teacher Chen led us to play a game-blowing balloons.

Teacher Chen said, "We don't blow balloons for decoration, but to see who blows them up first." We let out a long "ah" scream, which was really harsh, as if the roof were going to be overturned.

The teacher added, "Rub the balloon before blowing, and then pull it again, so it will blow."

At first, we boys screwed up. I blew and blew, and the balloon got bigger and bigger, but no matter how I blew, it didn't burst, and my nose came out. In the end, I was the first, because none of the boys blew balloons, and I blew the biggest balloon.

Then the girl blew it. As soon as Chen Xinyan blew, she found that the balloon was leaking, so the teacher changed it for her. At this time, Song Jiayi's balloon blew very loudly. Chen Xinyan ran out for fear that the balloon would explode. The teacher called her several times, but she never came back. What a coward. At this time, Song Jiayi blew the balloon and she won the first prize.

Finally, the teacher drew a face on my balloon, when my balloon suddenly burst.

Haha, today's balloon blowing game is really interesting, I like it!

Balloon fourth grade composition 14 The teacher said, "Today, we are going to squeeze balloons!" "Don't!" The whole class was frightened, and some people even screamed. When the teacher gave the order to "start", Chen Mou ran away, hid under the table, covered her ears with her hands and kept screaming, and the whole class burst into laughter.

The teacher asked Xie and Zhang to demonstrate, only to see Xie bravely go up, but Zhang went up in a battle. The teacher put the balloon in the middle. I saw that Zhang blushed and got up the courage. The teacher shouted, "One, two, three!" " "Xie bite the bullet, resist the strength, to Zhang Faqi onslaught, but Zhang repeatedly retreat, refused to squeeze the balloon. After many twists and turns, the balloon finally burst with a bang! Zhang is still in shock.

After that, the whole class squeezed balloons, only to hear a bang on the left and a bang on the right, which scared us to scream again and again. I pinched the balloon with Huang. "One, two, three" I twisted nervously, and I rushed forward. I saw Huang repeatedly retreat and refused to "fight side by side" with me. I can only use the "killing skill", but I still can't squeeze it, and I can't squeeze it into the wall. Finally, after a desperate effort, the balloon finally burst.

After many twists and turns, I am not afraid of the balloon bursting now.

Balloon composition for the fourth grade 15 Today, we held a unique balloon blowing competition in the classroom. The game has started. Teacher Liu ordered four students to go on stage and gave each of them a balloon.

Look! Player No.1 is holding the balloon mouth with his hand, staring at the balloon, his face rising like a bright red goldfish. He tried his best to blow a small yellow balloon into a glowing light bulb.

Player 2 takes a deep breath and releases the gas in his chest. His eyes were bigger than two bells, and finally he blew a bunch of candied haws into a bunch of big lanterns.

Contestant No.3 blew the balloon calmly, and it took her a long time to turn a small red apple into a big red peach because she was afraid of bursting.

Player 4 blew a white balloon like a little gel pen into a long and big sausage, but when he laughed, the big sausage flew out of his mouth with a bang, which made us burst into laughter.

Just then, Mr. Liu took the balloon of contestant No.2 and suddenly let go of the string of big lanterns, only to hear a whoosh. The balloon flew over the classroom like a plane and fell down again. Suddenly we were all happy.

After the game, Mr. Liu asked us to write down what we had just observed. We immediately picked up a pen and rustled it. ...

The composition class of this balloon blowing contest is really interesting, interesting, well written and interesting.