I love to use my brain for elementary school students 4th grade essay

Key words: Dad 4th grade 400 words.

Word Count: 400 words essay.

When I was a kid, my dad liked to ask me questions.

Once, he asked me, "There are 10 birds in the tree, and the hunter shot and killed 3 birds, how many more birds are in the tree?" I thought the question was too simple and confidently said, "There are still 0 birds!"

Dad shook his head, smiled, and said, "Is there any other answer?" You have to use your brains.

From: Essay Encyclopedia I thought about it and said, "It could be 3 birds."

Dad touched my head and said, "Think again." I thought about it again and said:

Or maybe 1 bird. Dad smiled and asked me, "Why?"

"The second possibility is that 3 birds died, all of them were hung on the tree, and the other birds flew away, so there are still 3 birds on the tree.

The third possibility is that 3 birds died and all landed on the ground, one bird was deaf and the others flew away, so there was still 1 bird on the tree. I rambled on and on. Dad patted me on the shoulder, interrupted me with a teaser, and said, "Tsai Minla thinks well!

Do things must use more brains" Author: Su Yi Luoding City Experimental Primary School Class 33 "Dad taught me to use my brain" This excellent "third-grade essay" is collected by the composition network, ** on the Internet and member contributions, for reference and learning only, **please indicate the source.

I am a lively and lovely girl, smart and flexible, and I love to use my brain, and nothing in life can stump me! Yesterday afternoon, in the last class, the head teacher, Mr. Chen, walked into the classroom and said to everyone, "Students, the whole school will be cleaned up in this class.

Next, I will make a division of specific work. ......Hong Leqin, the four students in your group are responsible for wiping the dust accumulated on the six fluorescent lamps. ......As soon as Mr. Chen's words fell, the students took their places and began to work intensely.

But the four students in our group were stumped. Look at the four of us, each with a rag in his hand, but each of them can only "look at the lamps and sigh", and none of them can touch the six lamps, let alone wipe them. To be honest, when we were cleaning before, it seems that these six fluorescent lamps have never been wiped by the students.

The reason is, of course, because they are hung too high, no student can reach them, not even the teacher! Over time, how thick the dust must have been! Not to mention, when I looked up at the back of the lamp, there was a thick layer of dust!

Hey, I'm going to be out of luck as the team leader this time. Look at the other groups, they are almost finished, but our group ......All three of them came running over and looked at me, as if to say, we can't wipe it, you think of a way, right? Go ask the teacher for help, it's never been my cold!

Time is passing minute by minute, and I can't think of a way anymore! At this time, I saw the long dust broom that Mei Lianchao was carrying in his hand, and I suddenly had an inspiration. By the way, we can tie the rag to a long bamboo pole so that we can wipe it?

So, I quickly told the other three students what I thought, and as soon as they heard it, they immediately started to act. In a short time, our new "long-arm rag" was made. Not long after, we successfully completed the task given to us by the teacher.

Mr. Chen, the head teacher, also praised my "invention" in class, and said that I love to use my brain, and I am good. It's making me so happy! Love to use my brain, so that I benefit everywhere, I hope everyone can use their brains more when encountering problems.

Remember the saying: "The brighter the mirror, the smarter the brain." ”

One noon during the summer vacation, the weather was very hot, and I felt thirsty, so I took a bottle of chilled mineral water from the refrigerator. The mineral water is so cool! I put the mineral water on the table, and after a while, the ice in the bottle began to melt.

At this time, I noticed that the outer wall of the bottle seemed to be covered with a layer of "mist", and the "fog" was getting bigger and bigger. After a while, the water and ice in the bottle were not clear. As soon as I touched it with my hand, the "mist" outside the bottle immediately turned into water.

Where the finger swiped it, the water and ice in the bottle could be clearly seen again. I brought a towel and wiped off all the mist outside the bottle, but after a while, the mineral water was "sweating" again.

Why does mineral water "sweat"? I was curious and determined to figure it out.

I went to the store again to buy a bottle of mineral water that was not frozen, put it on the table and observed, and waited for a long time, but I didn't notice "sweating". I suddenly remembered that in winter, there is also "water mist" and sometimes "ice flowers" on the inside of the glass of the windows in my home and classroom, which is caused by the large temperature difference between indoor and outdoor temperatures. I remembered that in science class, my teacher talked about "cold after snow" because the snow absorbs heat from the air when it melts.

So, I speculated that when the ice in the bottle melts into water, it absorbs the heat in the air, and when the heat of the air around the bottle is absorbed by the ice, the temperature drops, and the water vapor in the air condenses into a "mist" that adheres to the bottle.

Later, I asked my dad again. Dad said that my assumption was completely correct, and praised me for using my brain.

I also like to use my brain, I always don't like to use my brain, and when I encounter a difficult topic, I always simply think about it, and I don't just wait for my parents to tell me. But through one thing, I fell in love with using my brain and knew the joy of it. Once, I saw an anagram on a book, and the riddle was:

A man, whose surname was Wang, had two grains of sugar in his bag. I found a piece of paper, first of all, I thought: "one person" should be next to a single person, "surname Wang", then next to it is a "Wang" word, but the two pieces of sugar should be placed in **?

Put it on the prefix "king", no.

Use 1 example to write that you love to use your brain.

Write about examples and why you love to use your brain.

I look like nothing is happening every day, and I am a child who doesn't like to learn when others see me. But everyone guessed wrong. I'm actually very brainy. If you don't believe me, listen to me slowly!

In a Chinese class, the teacher taught us an article "Lying on the Waves and Reading a Book", which tells that there is a place called the Dead Sea in a foreign country, and people can lie on it without sinking, why is this? Why don't aquatic plants grow in the Dead Sea, but can fish and shrimp grow? This is a series of questions that I can't figure out.

I finally came up with a way we could do experiments! But what materials to use? Finally I thought of another solution:

I first took a cup full of water, then brought salt, eggs, and a small spoon, and used the spoon to scoop up a small spoonful of salt and pour it into the water, and put the egg in and sink to the bottom of the quilt. What is the reason for this? Could it be 、、、!

I tried to add another spoonful of salt, and sure enough, the egg floated, but the success brought me another question: can fish, shrimp, and aquatic plants grow in the sea? In order to figure out this mystery, I put two more spoonfuls of salt, and then found a small fish and put him in the water, the small fish just entered the water glass, desperately jumped up, it turned out that he wanted to escape, look at its pitiful appearance, I had to put it in the clear water, is it salt, why is it buoyant? Isn't it, salt is salty and has a certain buoyancy.