The "Open Science Course" has begun. The course content covers many aspects such as physical science, life science, earth science, universe and space science, the relationship between technology and society, etc. Below are the 6 comments I brought to you about the 2022 "Open Science Class" in primary and secondary schools, let us take a look together!

"Open Science Class" in primary and secondary schools 》Reflections after viewing (1)

Science is the driving force for human progress and development. Human wisdom is infinite. Whether it is about the universe or social development, it shows the progress of human science and technology. Marx's basic theory of "science and technology is the primary productive force" has encouraged many people who love science and technology, and their scientific research results have given wings to the take-off of our motherland.

We have learned the story of the scientist Edison. He invented the phonograph, electric light, telephone, telegraph, film, etc. for human society. He made great contributions to human civilization and progress in his life.

Students, you know: "Why does a thrown boomerang always come back to your hands?" ---Many problems require us to study and search, and this research and search That's science. Next we will do an experiment. We took off 4 pieces of cardboard from an empty milk carton. The length is 20 cm and the width is 3 cm. Then we used tape to fix the two pieces of cardboard in groups and glue them together. Cross the cardboard into a cross shape, secure the front and back sides with tape, and fold both cardboards into a slightly convex shape in the middle, and the boomerang is complete.

Pick up the boomerang, make the raised part of the cross-shaped cardboard face your face, and the cardboard surface is perpendicular to the ground, and then throw it out. The boomerang will draw a beautiful arc in the air and then return to your hand.

When a boomerang is thrown, it comes back because the airflow on the convex outer surface is faster. According to Bernoulli's theorem, the air pressure will become smaller in the air flow, so the air pressure will pull the boomerang to fly in the direction of the bulge. As long as the bulge of the boomerang faces your face when throwing, it will naturally turn to the direction of the bulge. The thrower's place.

Science is inseparable from everything in life, and it is precisely because of science that life will be better. I love science and I love looking for science even more.

Thoughts after watching "Science Open Class" in primary and secondary schools (2)

There is a famous saying: "Question marks are the key to any science." There are things everywhere in life. Science, they always bring us unexpected knowledge and gains.

For a while, my family kept several small ornamental fish. They are full of energy and graceful appearance. The colorful tails sway gently, like charming fairies.

One day, after dinner, I was observing the cute little fish in the fish tank. I saw these small fish playing freely. Suddenly, I discovered an "unsociable" little guy: it sank quietly at the bottom of the water, staring at a pair of big eyes, motionless, with only its gill covers opening and closing gently. It's strange, why doesn't this little thing play with other friends? Is it unhappy? Or is it sick? I gently knocked on the fish tank a few times. It was indifferent, maybe it didn't notice at all. I knocked a few more times, but it still didn't respond.

Now I was anxious. What happened to this little guy? I couldn’t wait to ask my father for help. Dad came over and looked at it for a while, then suddenly looked at me with an anxious face and laughed, which really made me, like a monk, confused. Dad said to me seriously: "This little fish is sleeping." "Ah? But it clearly has its eyes open!" There was a big question mark on my face. Dad explained to me: "The reason why fish always sleeps with their eyes open is because it has no eyelids and cannot close its eyes at all! Without long-term observation, it is not easy to judge whether a fish is sleeping. "After listening to my father's words, I felt relieved, and the worry in my heart finally disappeared. Alas, it seems that I don’t know enough scientific knowledge!

You see, there is a shadow of science everywhere in life. In the future, I will read more books, pay more attention to life, understand more scientific knowledge, and use scientific methods to do things to make life better.

Reflections after watching "Science Open Class" in primary and secondary schools (3)

Science is vast and profound and requires us to constantly try and explore. Even if there are some things that scare us, we will not Should retreat. As long as we face the difficulties, we will discover more mysteries of science and enter the magical world of science.

The parents of a classmate in the class worked at the Institute of Zoology, and invited me and several classmates to experience making bullfrog skeleton specimens and learn about the bullfrog's skeletal structure and characteristics. At that time, I agreed without thinking about it. It wasn’t until dead bullfrogs that were limp and whose eyes seemed to protrude were placed on the experimental table in front of me that I was shocked to realize that we were going to dissect the animal in front of us that was intimidating and unwilling to touch. The body that I touched and didn’t even want to take a second look at.

We looked at each other, and no one had any plans to do anything.

The classmate whose parents work here was the first to put on the gloves. While putting them on, he said to us nonchalantly: "Why are you still standing there? Put on the gloves quickly and get ready for dissection! My parents work like this every day, doing scientific research." Just try and explore it yourself!" I suddenly realized that if no one of us dared to do it, what would we learn? Aren't we here to learn about scientific research? Several classmates and I began to hesitate to wear the Gloves, but I don’t know whether it was because the gloves were difficult to put on or because of fear. Five minutes passed and we were just playing with the gloves. The classmate who had already started dissecting could not stand it any longer and shouted to us: "Hey! Hurry up! What's so scary? If scientists are like you and don't even dare to touch a bullfrog, then what are we going to do? What about the development and progress of science and technology?"

Yes, if scientific researchers were like us...

I finally mustered up the courage and took three deep breaths in a row, with a nervous expression. With trembling hands, he began to dissect. Huh? There’s no blood? I couldn’t help but ask that classmate. She told me that the corpses were cooked to facilitate the autopsy. Gradually, I relaxed and began to learn to dissect the bullfrog bit by bit. When I encountered questions that I didn’t understand, I asked the classmate, and I learned a lot about bullfrogs. Especially through "zero-distance" contact, I witnessed and felt with my own eyes the hard bones and well-developed and powerful hind limbs of bullfrogs that evolved as amphibians.

Science requires us to have the courage to try and do it ourselves, so that we can truly have our own experience, learn more and deeper scientific knowledge, and even make our own new discoveries and delve into the world of science. Only by getting close can we gain insights, learn knowledge, grasp the essence, and understand the truth.

Reflections after watching "Science Open Class" in primary and secondary schools (4)

Everyone will have a scientific and technological dream, imagining that they are a scientist and have invented many convenient and fast things, such as : You don’t have to go to school, you can use a microcomputer to take classes; you don’t have to reach out and you can have an intelligent robot feed you; you don’t have to go out, you can just sit at home and get what you want. But have you ever thought about it? There is such a thing that may make human beings extinct!

Why? Then I will tell you. If everyone is like this, who will use their feet to walk? Some people may be thinking: There is no need to go out to buy or sell things anyway, why should I go out, sit at home, play on the computer, and watch videos? , how good it is to have some snacks. In this way, everyone does not use their feet, which may cause the degradation of people's feet. Stay at home, and if you don’t know a question, just go to the computer and look it up. There are answers to every question, so you don’t have to think about it in your head. Just tap on the keyboard and you don’t have to think about the homework questions. What should someone do if they are too lazy to move but are hungry? It is called an intelligent robot. In this way, you don’t have to eat by yourself. You can eat while watching the screen or play games at the same time. So, why should you eat by yourself? Woolen cloth?. On a more serious note, the first one—microcomputers—could degrade human feet. The second—bringing you what you want—makes humans greedy. The third one—intelligent robots—allows humans to eat without using their hands, creating dependence. The fourth - computer question and answer - allows people to know the answer without thinking. In short, I would like to advise human beings "Don't rely too much on high technology, but also exercise and think appropriately sometimes."

Thoughts after watching "Science Open Class" in primary and secondary schools (5)

< p> We cannot predict the future, but I believe that future technological innovation will reach a higher level.

I firmly believe that one day, tablet computers will enter the classroom and enter every family. This tablet is transparent and controls all the electricity in the home. During school, as long as you set the alarm clock, when the time is up, the alarm clock will sound and the designated lights will light up; after you get up, you can choose your own clothes. During school, when you turn on the computer, you can have a panoramic view of the knowledge in the classroom, analyze pictures, and teach everything you need. Take a picture and it can be turned into a 3D animation for easy understanding.

I firmly believe that one day, every house will be converted into a solar power generation system. In this way, resources will be used rationally, the environment will be protected, and a lot of money will be saved on electricity bills. . Every year, resources are over-exploited due to excessive use of electricity. However, the earth's resources are limited and cannot be used by humans for a long time. However, solar power generation is very environmentally friendly and inexhaustible.

I firmly believe that one day, robots will be available in every household. Let everyone feel the breath of modern technology, and more importantly, let people get convenience, and a relaxed atmosphere fills the air, making people feel refreshed. It can help us wash vegetables, mop the floor, wash clothes, and sweep the floor? Anyway, it can do all the housework that humans can do.

I firmly believe that one day, everyone will be able to go to the moon, experience the feeling of weightlessness, feel the moment when a high jumper stays in the air; observe the difference between the surfaces of the earth and the moon; compare the moon It is different from the smell, appearance, and color of plants on the earth. Maybe I will use it for research and develop something that will benefit human life.

I firmly believe that one day, these and all fantasies will become reality!

Reflections on the "Open Science Class" in primary and secondary schools (6)

< p>Science is everywhere around us, and it affects the entire earth. Scientific principles are everywhere around us, such as: Why can a pen produce ink and write? Why can a computer quickly and accurately calculate a troublesome equation? Why can a telephone answer the question? Reaching other people’s phone calls? There are countless such examples. This is actually helped by technology.

Why is science so powerful? The answer is all around us. As long as we pay attention, we will get the power of scientific practice! From the 1st century to the 21st century, from tattered things to nanotechnology. In this ups and downs of thousands of years of history, it is technology that has changed our destiny, it is technology that has changed the world, and it is technology that has changed the pace of the people. Recently, the Shenzhou 7 manned spacecraft sailed into space, bringing the world's space history a step closer. But have you ever thought? This is not just because scientists are smart, but because technology is the brain of scientists going one step further. From God One to God Seven, from unmanned to manned. It is the pace of science and technology that has brought my country's aerospace industry to a higher level. Thank you so much for technology! Bit by bit, we accumulate into a sea. Let us pay attention to the things around us and care about every bit of it. Let the pace of technology lead us to a higher realm. Therefore, we must be good at science from primary school to win glory for the motherland and add color to the world. Start with me, start small. Let the youth of the 21st century carry forward the avenue of science and technology!

Reflections on the "Open Science Course" in primary and secondary schools (7)

The development of science and technology is driven by a majestic force Our pace of progress; science and technology is developing, it is the bright future blown by the spring breeze; science and technology is developing, it is the sweat of the working people that is watering the beautiful fertile soil, ah, science and technology is developing, the future of the motherland is moving toward a bright future!

The annual spring outing is here again, and we all got on the bus with good expectations. The scene on the bus can be called a spring breeze! The scenery outside the window is also unique, and there is a warm atmosphere everywhere. . Cars full of smiles flew by on the highway.

Radar Academy, military management. As soon as I entered the college, thunderous shouts came into my ears: "One, two, three, four, one, two, three, four." It was so neat and strong. Looking again, there are teams of teams, with hands dancing and feet stepping. Their military postures are so chic and neat, without a trace of fatigue

Their rooms are also military-like. manage. Look at that quilt, it’s piece by piece, like tofu, with edges and corners. I really don’t know what magic they used to turn the "soft" quilt into a "hard" terrace. "The most solemn flag-raising ceremony is about to begin. I saw uncles in blue military uniforms holding red flags and marching steadily towards the rostrum. When the bright five-star red flag slowly rose, everyone Everyone's eyes were focused, and everyone's face showed excitement.

What amazed us even more was the sophisticated radar. Look at the vertical radars. In front of our eyes, the metal tubes above the radar are woven into magical "nets." "It can emit battery waves, and the speed of propagation is the speed of light C. In the 1930s, there was a major breakthrough in radio technology and the invention of radar. Today, radars that can detect long distances no matter day or night are being demonstrated. In front of us, I couldn't help but feel a sense of admiration in my heart. What an amazing invention. This may be the inevitable result of the development of science and technology!

Although we are a little tired today, we have experienced The reason why today's society is advancing rapidly is that it is inseparable from the development of science and technology, which also adds to our strong interest in military aspects.

Technology is developing, and the shoulders of our generation are heavier!

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