In my long and interesting childhood, I discovered many little secrets in life. The most unforgettable thing that year was to discover the secret of a square watermelon.
It happened not long ago: I saw a watermelon on TV. You may ask what's strange about watermelon? But it is a square watermelon. I was surprised at the same time, a huge question mark appeared in my mind, including round watermelon and oval watermelon, but how did the square watermelon grow? I asked my mother with a questioning attitude. My mother said, "If you want to acquire knowledge, you must rely on your own strength." Then he left.
I went back to my bedroom and thought about it. If this is a different variety, why didn't it appear before? I denied the first idea. If it is a model watermelon, how can it have pulp? I denied the second idea again. Finally, I thought about it. I finally came up with some ideas. It may be a kind of melon skin. Then I put the watermelon pulp in it, and it becomes a square watermelon.
I went to ask my mother, and she said, "Maybe, maybe some people think so. But scientists don't think so. "
I have been thinking about this problem for the next few months.
One day, I was watching TV and playing with square watermelon. An uncle who grows melons told us that a square watermelon was put on a big square shell when he was a child, and then hung in a square shape.
The discovery composition of Grade 2 in March, Spring, graceful willow branches, charming poplars and bright flowers ~ all the scenes are so charming and intoxicating. I walked into spring and found the surprise of spring.
In spring, there is a warm spring breeze that awakens the earth, sleeps for a winter, and gently opens sleepy eyes. Spring breeze is the messenger of life.
In spring, the spring rain is continuous. It moistened the grass, watered the willows and pushed away the winter jasmine. In this warm and cold season, the winter jasmine blooms alone, telling us that spring is coming. Then, the grass got out of the ground, twisted its weak body and looked around curiously; The "beauties" in the garden also woke up and won glory; The willows sway their waist branches and dance with the wind ~ The spring rain "rustling sand" falls underground, and the humid air comes with the fragrance of the earth after the rain. Flowers are redder, trees are greener, the sky is bluer, the sun is warmer and the earth is colorful. Spring rain is the cultivator of hope.
In spring, there are beautiful birds, frogs and all the vibrant animals here. Especially the lovely swallows, I often search for wires, because they fall on the wires, like small and exquisite notes on the staff, and the sound of "Ji Ji" is like singing a hymn of spring.
Spring often makes me think. People always regard spring as a symbol of life and hope, and our children are also called "Spring of the Motherland". So let's cherish this precious spring and strive to create a better spring for our motherland!
I was walking home from school when suddenly a big tree appeared in front of me. There was no time to brake, so I had to have a close contact with it. This is, I found a leaf moving next to the root of the tree. Open it and it turns out to be a "Hercules" ant!
Huh? Why are ants moving? I want to know, why does Hercules move? I came home with these little question marks and thought, let's ask dad. I rushed into the room and told my father in detail how I found this problem. Father smiled and said, "There is a saying in China:' It will rain when ants move'. Go and see the weather forecast. It will definitely rain these days. "
I switched to the news channel, and my father was right. It will rain the day after tomorrow. I went to ask my father again, "How do ants know it's going to rain?" Dad replied: "ants are different from humans, and not only ants know, dragonflies and crows also know ... as long as they are good at observing, they will find more interesting things."
Yes, this is only a small discovery, but as long as we have a pair of eyes that are good at discovering, we will certainly find more little-known things.
For the Guangzhou Chinese recitation competition, I practice reciting at school every day, and my voice is hoarse from time to time. My mother asked me to soak in the boat-fruited Sterculia. What is boat-fruited Sterculia? What was it like before soaking in water? What is it like after soaking in water? Curiosity caused a series of problems in my mind. So I immediately went to the tea box and took one and put it in my hand to ponder. Boat-fruited Sterculia is brown, with irregular fine lines like bark. It feels uneven and very hard. It is oval, shaped like an olive, with sharp ends and a chubby middle.
I brought a cup of hot water, put boat-fruited Sterculia into the water, and waited quietly while reading. 1 minute, 2 minutes, 5 minutes passed. I opened the lid and found that there was nothing inside except some fragments. I waited a little longer, but found nothing. Finally, after waiting for 20 minutes, I opened the lid again, ah! Boat-fruited Sterculia "exploded", and it became much bigger, revealing some brown objects such as jellyfish and sponges.
The water soaked by boat-fruited Sterculia turned yellow. I took a sip, which tasted of traditional Chinese medicine and was slightly bitter, but my throat immediately felt cool.
Although boat-fruited Sterculia is ugly and the water is not good to drink, it has many functions, which just confirms what the ancients said: "Good medicine tastes bitter."
The discovery of composition 5 in grade four sometimes happens inadvertently. At noon today, when I was repairing the car model, I accidentally created an "artist" with "502" super glue.
Because the glue on the bottle mouth solidified, I couldn't squeeze it out, so I had to take a piece of wood, pour the glue on it and dip it in. There was a lot left after using it, so I dropped a few drops of colored pen water on it. These drops of colored pen water float on the super glue, which is very "leisurely". In a short time, the two drops of black marker water were actually dried with super glue and became like coral reefs. Seeing this scene, I was curious and nervous, afraid that it would hurt me. I carefully picked up the scissors and touched this pocket-sized "coral reef", which was very hard; At this time, I found that other colors of' crayons' have different changes:
Some of those blue fountain pens are like a leaf, some are like a flower, and some are like a ball of stockings, while those green fountain pens are like mushrooms without stems. The most interesting thing is that these four drops of fluorescent yellow colored pen water have become "crispy" like some egg towers, and the inside is very golden, which has become a "pocket version". When I was writing a diary, I found that the two green "mushrooms" had shrunk into two fallen leaves. However, I would like to remind students that if you are interested, you must be careful with super glue and pay attention to safety when trying.
This confirms that sentence and finds that it happened inadvertently.
In nature, if we don't act according to the laws of nature, many things will often produce the opposite results. A little, me too.
One Sunday afternoon, I finished lunch and wanted to go out for a walk. But I just thought of the gate of the community, only to find a small snail crawling slowly in the corner of a very inconspicuous small wall. I came to the snail and wanted to play with it, but it found me. It plunged into the snail's shell, and I had no choice but to find a way to get it out of the shell. I used the stupidest method first, which was to avoid it. One minute passed, two minutes passed, five minutes passed, and there was still no response. Then, I put it in the water and kept stirring. After a while, my plan didn't succeed, but I fainted the fragile little snail. There is no choice but to use the third method, which is to call: "Come out quickly! My little snail, or I will ignore you, come out quickly, I. . . . . "Needless to say, this plan must have failed again. I sat helplessly on the ground. Suddenly, a good idea came to me. So I took a candle, lit it and put it in front of the little snail. A minute later, the little snail moved. Another minute later, the little snail saw the light and slowly put out his head. Great, my plan succeeded. After a while, the little snail left.
After this incident, I understand a truth; You can't impose everything on others, you must obey others to succeed.
The discovery of the fourth grade composition 7 Nature is like a kaleidoscope. All kinds of strange natural phenomena will appear around us from time to time, but among the interesting question marks, the most unforgettable thing is that I discovered the secret of mimosa.
Last year, my mother bought a pot of mimosa, which was very lush. I like it very much and find his name very interesting. Like me. I wonder how it is afraid of shame. Once, I touched its leaves lightly, and as a result, its leaves closed immediately. I was curious, so I touched other leaves with my hand, and it was the same. I stepped aside and stopped touching it. After a while, I didn't expect its leaves to spread slowly. Moreover, I also found that in rainy and windy days, its leaves will also close.
"Why are the leaves of mimosa closed?" "Why is it closed in rainy and windy days?" "Are you really as shy as people?" I was puzzled and asked my mother with questions. My mother said, "Find the answer yourself." I went to check the information, and after a long time, I finally found the reason: the leaves and petioles of mimosa contain a lot of water. Touch it with your hand, and the water on the leaves will flow to other places, so the leaves will roll up. On the contrary, if you touch the petiole with your hand, the water below will go much more and the whole leaf will hang down. In rainy days and strong winds, its leaves droop, which is its way of protecting itself from being broken by storms. I suddenly realized that mimosa is not really shy! At this time, I am very excited, because I picked another small flower in the garden of science and caught a small fish in the ocean of knowledge, which I will never forget.
There are still many natural mysteries in the world waiting for us to uncover. When I grow up, I will study hard and explore more mysteries of nature. Right?
A few days ago, my mother took me to the Children's Palace for guitar training. On the road, I found that there were more people riding bicycles and fewer people driving. The road is smooth.
Later, when I came home, I saw three or five friends with cars, bicycles and battery cars, much more than usual. Take a closer look and count about twenty or thirty cars. When I got home, I thought about it carefully: Why do many people ride their own cars and battery cars instead of driving? Later, I thought about it carefully: maybe everyone realized that it is low-carbon and environmentally friendly, not to mention riding a bicycle is also very exercise. However, one reason is unlikely. So I went to ask my mother again, only to know that the car exhaust was toxic. When the car is waiting for a red light, the exhaust gas is 10 times or even 10 times more than the exhaust gas emitted during driving. Also, it's getting harder and harder for roommates to mine now. All our oil is bought from foreigners.
Now I borrowed a bike to ride home before I finished the training class in the Children's Palace, because our Children's Palace is close to home, and it takes about fifteen minutes to go home by bike. Moreover, cycling is also very physical exercise, and it is also very low-carbon and environmentally friendly.
So please drive less and ride more.
Today, the sunshine is particularly bright and warm. We are going to play at grandma's house.
When I arrived, I sat on the sofa doing nothing. My sister said to me, "Let's go outside and burn leaves with a magnifying glass!" " ""How can a magnifying glass burn leaves? " I asked at once. Sister said, "You will know later. "So, my sister and I went to burn leaves with questions.
We came to the yard and saw many leaves falling to the ground from the plum tree. My sister was burned. She squatted down and pointed the magnifying glass at the sun. I saw a yellow aperture on the ground, facing the leaves, and soon the leaves smoked. I said happily, "That's interesting. Let me try!" "I also burned the leaves according to my sister's posture, which was really smoked. It's amazing! But I still don't quite understand why the magnifying glass burns leaves, so I quickly went to check the information. It turns out that a magnifying glass is also called a convex lens. Thick in the middle and thin on the sides. When sunlight passes through a lens, it will be refracted. After the light passes through a magnifying glass, it will converge to a certain point behind the mirror. This is the key point, because light is a high-energy substance. When sunlight gathers together, the temperature is definitely high, and it is of course normal to burn things.
Students, we have to observe carefully to discover many mysteries!
On Sunday, I went to my uncle's farm with some cousins and friends. The farm is full of turtles.
When I got there, all I saw was a pond with turtles. How big it is there! We can see some turtles digging holes in the soil to lay eggs. Look, after they are born, they bury their eggs in the water. It happened to be the last day of collecting eggs, and we saw the aunts busy collecting eggs. They first loosen the soil with a shovel, and then pick up the eggs. "Why are you picking up eggs?" I asked my aunt that I couldn't check eggs by hand, so I could only use chopsticks to clamp them. Touching an egg may not hatch a turtle, so use chopsticks to clamp it.
After watching the turtle eggs, I went to the turtle hatchery. I saw many turtle eggs buried in nutrient mud in the turtle hatchery. I want to know how to hatch a little turtle. So, I was there to observe. I found that the tortoise has exactly the same thing as people, that is, people have not put anything in their navel since they were born, and so has the tortoise, which will last for more than ten days.
Through this observation of turtles, I found that people can't hatch young turtles by picking up turtle eggs with their hands. Turtles have the same characteristics as people-their navel protrudes at birth.
The fourth grade found the composition 1 1 "yeah! Let's travel! " Even against Ming said excitedly. So! The teacher said to take us downstairs to find Qiu today!
Downstairs, an autumn wind blew, and I shivered and felt very cold. Look at the sky, just like a white quilt, and you can vaguely hear some birds singing.
Look! Some leaves of those osmanthus trees have turned yellow, but there are only a few yellow leaves, and some are still tender. Look! There are still fruits on the tree! Some fruits are blue-green, some are brown and some are cracked. There is also a tree, Cycas, whose leaves are sharp and yellow. If I stab you hard, your hand will definitely bleed.
There is grass, don't forget! It is also the "protagonist" of autumn! It's green, yellow and white. It's soft to step on, but if you sit on it, you will definitely get hurt by the grass.
Besides, I also found a butterfly, an ant nest and many spiders.
Ah ha ha! This love hiding in Shenzhen in autumn has finally been discovered by us!
In the fourth grade, I found the composition 12. I found the respiratory organs of grasshoppers.
Grasshopper's respiratory organs are very interesting. Do you want to know?
Every animal has its own respiratory organs. For example, fish breathe through gills, frogs breathe through skin and so on. On the other hand, grasshoppers breathe through two small holes in their abdomen, which I read in a science book. But in the book Insects in the Book, it is written that grasshoppers breathe through a small hole in their heads. Which answer is correct? So, I thought of doing experiments to prove the correct answer.
One Saturday afternoon, my experiment was carried out downstairs in the community. First, I quickly caught a green grasshopper in the dense green grass. I hugged its lower body tightly, then went to the fountain pool in the community and put the grasshopper's head in the water. It struggled, its legs kept kicking, and I endured itching and pain. Gradually, I feel that the grasshopper's struggle strength is small, and finally it really doesn't move. It seems that he died of suffocation. To continue my experiment, I caught another grasshopper. This time, I put it all in the water, and it fluttered in the water, making my hands itch. When I was not careful, it pushed hard on its hind legs, and I let go with an "ah", and the grasshopper jumped away and ran away. I was a little depressed at that time, but I got a scientific answer through the experiment, and my bad mood disappeared.
It seems that the answer obtained through personal experiments is the most accurate.
There are many wonderful secrets in nature waiting for us to discover and explore. For example, why do dragonflies order water from time to time? What tools do crickets use to build nests?
Once, I played with some friends by the river. Suddenly, a beautiful dragonfly passed before our eyes and came to the mirror-level water surface, and then stroked it on the water surface from time to time, rippling around the waterline. My curiosity drove me to find the answer. I waited quietly for the opportunity, staring at the dragonfly's movements-clicking there again and again.
I told my parents about this strange phenomenon. They said: "Dragonflies may drink water, because they love hygiene and bathing as much as we do, so they often drink water."
I'm skeptical. So, I asked my good assistant-computer for help. I looked at one website after another. Ah, many things happen. I found the answer I wanted in Baidu:
In fact, dragonflies with water are all females. Some people say that water is used for washing ass, laying eggs, courtship or beauty, so some water is needed. Why on earth do dragonflies need water? In fact, although dragonflies are insects that live on land and fly in the air all day, their larvae live in water. In order to breed, they must choose to lay their eggs where there is water, and fertilized eggs can only hatch in water. So the dragonfly dipped its tail in water to discharge the fertilized egg into the water, and the egg attached to the aquatic plants in the water. Soon, they hatch larvae. After living in water for a period of time, larvae are called hydra, which climb out of the water along the branches of aquatic plants.
Although this discovery is small, it is very meaningful to me.
I know a lot about nature. I will open my eyes and discover more secrets in the future!
Today, I am very happy, because I can have a spring outing. In the early morning, we lined up neatly at school and set off happily. We talked and laughed all the way, and unconsciously came to the beautiful Slender West Lake.
As soon as I entered the gate, I smelled the flowers. On both banks of Slender West Lake, there are two rows of newly sprouted willows, and their branches are floating in the wind, like the long hair of a girl in spring. Go straight along the road and we will enter the "Xu Garden" together. I found some big, round and green lotus leaves in the pond, and some small red goldfish could be seen on the water. They are all alive and kicking in the water, as if they have some good news to tell me. After walking for a while, everyone was tired, and the teacher found us a clearing to rest. I looked down and found that the grass just washed by rain was wet and clean. Although the early spring has just arrived, the chill has not subsided, but it is not afraid of the cold, breaking through the ground, revealing green sharp buds, as if to say to us: "Spring is coming, spring is coming."
Although grass is not as noble and elegant as peony, as beautiful as Jin Yingchun and as fragrant as jasmine, it has indomitable spirit. No matter how bad the weather is, as long as spring comes, it will straighten up and bring us the news of spring. This reminds me of a poem: "Wildfire will not devour them, they will be tall again in the spring breeze".
I found a few strange things today: all the fish surfaced as if they were dead; The swallow flew so low that it almost passed me several times. Are their wings hurt? Ah! ? Even ants climbed the tree. While I was thinking hard, it suddenly began to rain cats and dogs, so I had to hold my head and go back to the house.
I told my mother about this discovery, and my mother smiled and said, "Then find the answer yourself!" " I quickly opened my mouth. "Why? I found the answer from the book.
It turned out that the fish surfaced because there was no oxygen in the water. Before the rainstorm, the river was deprived of oxygen because of the humid air, so the fish could no longer rely on gills to breathe, so they could only breathe through their noses. Even my little goldfish emerged from the fish tank.
Swallows fly low because their food, mosquitoes, flies and other insects are covered with small water droplets, so they fly low and their wings are heavy. Swallows also fly low with mosquitoes and flies.
Ants climb trees because the air is humid. Ants can detect the humidity of soil with their tentacles, so they climb trees collectively to prevent being drowned by rain.
Today, I learned a lot. I'm so happy! I also believe that as long as I observe and think with my heart, I will certainly discover more mysteries of nature!