Fourth grade enlightenment composition

In daily study, work and life, many people have experienced writing and are familiar with it. Writing is an important means to cultivate people's observation, association, imagination, thinking and memory. How to write a good composition? The following are eight fourth-grade enlightenment compositions that I have carefully arranged. Welcome everyone to refer to it, I hope I can help you.

I was drawing a copybook on Friday night, and it was crooked. I was very angry and said to myself: I can't be crooked any more. But the drawing is crooked, so I decided to play on the balcony.

When I first arrived at the balcony, I saw a little ant fighting with another little ant. I was in a bad mood at this time, so I left them in the fish tank and then I wanted to walk away. However, two ants climbed up together. So, I threw two ants into the basin, blew into the basin, and observed carefully. This time, due to the interference of the wind, it is even more difficult for them to get up. However, the next scene shocked me: an ant was pushing and swimming behind, and an ant was pulling and swimming in front. Although there is interference from the wind, with their concerted efforts in Qi Xin, this difficulty is nothing. After a series of efforts, they finally climbed up.

I suddenly realized: a small ant can get up again and again, can't I? Thank you, ant. You let me know what persistence really means, and I am determined to draw the copybook well!

A beautiful rainbow appeared on the horizon after the rain cleared. I ran out of the house happily to see the beautiful rainbow after the rain. Walking, I came to the tree. The crystal beads of rain on the leaves, as well as a string of dripping rain, make a "tick-tock, tick-tock" sound, which is really nice to listen to, like a beating note.

Suddenly a crawling creature crawled slowly in front of my eyes. What is that? Curiosity drove me to find the answer. I squatted down and saw that it was a small snail, but it climbed so slowly. What can it do?

At this moment, my father stood beside me. He seemed to read my mind and said, "Although climbing is so slow, it is very useful. It can be used as medicine to treat diseases. " Moreover, the snail's shell is very hard, which can supplement calcium and protect the body from other animals. What can you think of to protect yourself from this? "

After listening to my father's words, my thinking accelerated instantly: mom and dad can protect me, but mom and dad also need protection. Of course, it is home that has been protecting us. Thinking of this, I said to my father, "It's a house. It turns out that our human house is inspired by snails! " "After listening to my words, my father said," That's right. The house can shelter us from the wind and rain and live a happy life, so home is a warm harbor in everyone's heart. "

Through today's observation, I finally understand that some unremarkable things can often give people a lot of inspiration. If you use your head and observe carefully, you will find more mysteries of nature.

I learned a lot after learning Unit 3-Enlightenment from Nature. If we don't act according to the laws of nature, we will have the opposite result. Nature is our teacher.

We formed a comprehensive group. After discussion, we decided to worship the lotus leaf as our teacher. The teacher's lotus leaf is green and round, like a jasper plate, with a dark green upper surface.

After observing the teacher, we found that the water droplets on the lotus leaf would not wet the lotus leaf. Because the lotus leaf is covered with a thin layer of wax crystals, the wax crystals are waterproof. So the leaves will be very clean, which is the characteristic of waterproof leaves.

Based on this, I had an idea whether it is possible to attach a very thin layer of wax crystal on the surface of lotus leaf to the bottom of slippers. Wear this pair of waterproof slippers when taking a bath, which is both non-slip and waterproof. There is no water on your shoes when you come out of the bathroom. This kind of slippers is particularly practical. When you come out of the bathroom, you are not afraid of getting the room wet, and adults and children are not afraid of slipping.

I like playing with water since I was a child, and I often go to various watersides with my parents.

One day on the weekend, my parents and I went climbing and rested by a stream on the way. The tinkling sound of the stream attracted me like a beautiful song. I looked inside, and it turned out that the stream next to me was flowing down the mountain, and it was not urgent or slow.

However, not far ahead, a big stone crossed the middle of the stream. I thought it would block the stream. I'm very worried. As a result, it was not worried at all. I don't see the stream in a hurry. At the moment it touched the stone, it made a big turn and slipped over the edge of the stone. Without stopping for a moment, I rushed forward without hindrance.

Further on, there are many long aquatic plants in the stream, and some dead branches and rotten leaves are lying at the bottom of the water, but they can't stop the progress of the stream.

What an amazing scene! I'm thinking: this stream must have gone through many difficulties and obstacles all the way down from the mountain, but it keeps going, never flinches, and runs all the way to its goal.

I was deeply moved by the spirit of the stream: this humble stream is so persistent and tenacious. The stream in front of me reminds me of myself, and I am ashamed, because when I face difficulties in life, I always shrink back, find various reasons to explain myself, and sometimes even give up.

This stream made me understand a truth: difficulties and setbacks are inevitable on the road to growth. I will face it bravely like a stream, never flinch, bravely overcome it, overcome it, and let us achieve our goals.

According to the visual principle of frog's eye, an electronic frog's eye was successfully developed. This kind of electronic frog's eyes can accurately identify objects with specific shapes like real frog's eyes. After installing electronic frog eyes in radar system, the anti-jamming ability of radar is greatly improved. This radar system can quickly and accurately identify aircraft, ships and missiles with specific shapes. In particular, it can distinguish between true and false missiles and prevent false confusion.

Electronic frog eyes are also widely used in airports and traffic arteries. At the airport, it can monitor the take-off and landing of aircraft, and call the police in time if it is found that the aircraft is about to collide. On the main road, you can direct the vehicles to prevent them from colliding.

People have successfully designed an accurate "jellyfish ear" instrument by simulating the organs of jellyfish that feel infrasound waves. It consists of a loudspeaker, a vibrator for receiving infrasound waves, a transducer for converting this vibration into electric pulses and an indicator. This instrument is installed on the front deck of the ship, and the horn rotates 360. When it receives 8 Hz- 13 Hz infrasound, the rotation stops automatically, and the direction indicated by the horn is the coming direction of the storm. Indicators can also tell people the intensity of the storm. This instrument can forecast storms 15 hours in advance.

The compound eyes on both sides have the greatest influence on the behavior of horseshoe crab. After being irradiated by the light beam, the compound eye produces a pulse. One eye is irradiated by the light beam, and the other eye generates the main pulse; Both eyes are irradiated by light beam at the same time, and both eyes generate pulses at the same time, but the frequency of pulses generated by light beam irradiation on one eye is slightly lower. Inspired by it, mankind has successfully developed an electronic simulation device, which can solve the network equation composed of 10 elements. The TV camera made by applying this principle can provide high-definition TV images under laser.

Without nature, there would be no beautiful earth. Let's join hands to protect nature and protect the earth.

As the saying goes, "there is nothing strange in the world." As long as we think carefully and observe carefully, we can find countless mysteries hidden in nature! Take "ants moving" as an example.

I am good at discovering and observing some invisible objects and creatures in life. Whether in the grass or in the Woods, I will find something terrible, magical and interesting. It's not earth-shattering, but it's still exciting. After all, I found it myself! One thing is fresh in my memory.

Once, I found a group of ants under the tree, slowly and gently approaching this team with curiosity, even afraid to breathe hard, for fear of disturbing this army. I saw an ant suddenly come out of the queue. It greeted its oncoming friends with tentacles on its head, and then left in a hurry. What is it doing? Hug? Suddenly, the ant quickened its pace and turned back. I followed to see what happened. After a while, another group of ants appeared. They seem to have discovered a new continent and quickly surrounded an earthworm. An ant touched the earthworm, and the earthworm wriggled as if it had found something, but the ants became more energetic. Maybe they haven't eaten for a long time ... there are more and more ants, and the earthworm is exhausted by them. What surprised me even more was that they were able to lift the "huge" earthworm and move slowly to the hole. Although they moved slowly, they didn't give up.

In fact, ants are insects with a strong sense of unity.

Many people say, "Nature is the teacher of mankind." I have always denied this sentence before. Isn't it said that human beings are the most advanced creatures in nature? Why do you say that nature has surpassed us now? Until that day. ...

I finished my homework and went to the yard to practice skipping rope, only to find that there was another big wave of ants moving sand and stones in an orderly way around the corner. Their team is very neat, dense and huge. This aroused my great interest, so I became "Fables" and observed it. Oh, so they are building nests for themselves! But to my surprise, their division of labor is so clear and orderly, just like a well-trained big army. They move, move, move, move, and then stick together.

Nearly an hour passed, and this great project was finally completed. I was dumbfounded during the whole process, and I was completely impressed by their persistence and perseverance!

Think about us again: although we humans are the most advanced creatures in the world, if we don't unite, we will eventually be fragmented and accomplish nothing.

In addition to ants, there are many inspirations from nature, such as: flowers standing upright in the wind and rain tell us to be strong; Water drops and stones tell us to persist; The sea tells us to be broad-minded ... nature is a book without words and contains too many secrets. Let's go into nature together, listen to the sounds of nature, appreciate the scenery of nature and explore the secrets of nature!

One day, I came to grandma's house to do my homework. After finishing my homework, I went downstairs to play.

I was about to play when I found a big black thing by the door. So, I went in and looked at it. It was a small piece of candy, full of ants. Just as I was observing these ants carefully, a large number of ants rushed over and ran under the sugar to carry them together. So many ants pull, push, push, as busy as a bee. A big ant, it should be the queen bee. It climbed on top of the sugar and directed everyone to move. Other ants try to move. I seem to hear them shouting "one, two, three, come on!" " With the efforts of ants, sugar is moving bit by bit. What a group of United little guys! Driven by curiosity, I grabbed an ant and observed it. When other ants saw it, they immediately formed a group to protect sugar and worker ants. I seem to hear them saying, "Go away, go away, don't come here, or we'll bite you!" " "I froze, and the imposing manner frightened me. I put this ant in my hand, and I was shocked by their unity. When they saw me motionless, they probably thought I was afraid, so they lined up again and slowly sent the candy to the nest.

Grandma's voice calling me back for dinner brought me back to reality. When I went upstairs, I knew that anything could be done as long as we were United.