Personal views on open science courses (1)
Science, originally referring to learning by subject, refers to gradually forming a complete knowledge system through careful and classified research. It is a knowledge about the practice of discovery, invention and creation, and it is the general name of the knowledge system for human beings to explore, study and understand the changing laws of everything in the universe. Science is everywhere in life, and we should also use it in life.
If science is to be used in life, the first step is to learn science. We should not only learn the knowledge in class, but also accumulate more extracurricular knowledge. Because science is a wide field, there is a lot of knowledge to learn. So much knowledge? This will involve the next step: using science.
Learning is the most important step, and the application of science is also different: the inventors in the TV program I watch "I Love Inventions" all apply the scientific knowledge they have learned and mastered to their own inventions, and create achievements through inventions again and again, saving a lot of working time and improving work efficiency. At the same time, none of them can directly succeed in invention and creation, but after repeated failures, sum up experience and find out the reasons for the problems. This also tells us that science should be tested by practice. We must learn and absorb scientific knowledge like sponges now, so that we can apply what we have learned to our work and life in the future. I will also study hard in the future, and strive to become a talent who applies what I have learned when I grow up. My dream is to be an architect when I grow up. I want to build a modern high-tech house. It not only has a comfortable and convenient internal environment, but also has many other functions, such as walking or flying. However, it is impossible to build such a house without the infiltration of scientific knowledge. Therefore, science is the premise of creating everything, and it is also the inseparable foundation of our modern life.
When learning to apply science, we should love this wonderful friend from the heart, just like interacting with good friends. We should read books about him every day and learn more about his "strengths" at ordinary times to make up for our own shortcomings. Only by mastering rich scientific knowledge can we create more beautiful things.
Students! Come on! Now we begin to work hard, swim in the ocean of scientific knowledge, be a happy Spongebob, absorb more, and do our part for the prosperity of the motherland in the future!
My Opinion on the Open Course of Science (Ⅱ)
_, we came to the school's science and technology activity room to visit and experience the "popular science caravan". To tell the truth, I have always been full of strong curiosity about these things.
The first thing I saw was the "solar power generation" device. As long as I press the button, I can watch the windmill driven by solar energy turn. I saw the windmill spinning faster and faster. The small light bulb shines on the place where the windmill absorbs heat. Gradually, the windmill turns.
The rule of "square hole drill" is: hold the handle and turn it. What kind of figure will arc triangle drilling be drilled into? I guess it is square. Of course, it may be wrong. I studied for a long time before I came to the answer. Hey! It's not easy!
"Grating animation", how interesting it is to push the grating board by hand and see a bird "flying" on the grating board!
"Eight immortals crossing the sea", I thought it was the eight immortals crossing the sea on TV, but it was not what I thought. Although it seems simple to put such a small building block in the frame, the result is beyond your imagination. Can improve our spatial imagination.
What excites me most is the gentle electric shock, which must be done by two people together. Just put one person's hand on two iron balls and then turn on the switch. I will feel a slight electric shock. I've been there, too. It's really amazing.
Then I suddenly saw a very interesting experiment, which was very scientific. My partner and I will guess which ball rolls faster first. I guess the one with four circles reached the finish line first, but my partner said that the middle circle dispersed first. My partner and I are arguing endlessly. I suggest that we can know the final answer as long as we practice So my friends and I began to prepare. After a fierce competition, I finally won the game and became the final winner.
As soon as I heard the name "cross-border innovation", I wanted to try this work! This question can also be answered concisely by mathematics. He let two people ride on the horse at the same time, and let the horse gallop. The tools and appliances used cannot be duplicated. I immediately picked up what I needed and began to study. No matter how I spell and wave, I can't do it. This problem is so difficult that I don't want to do it. Just as I was about to give up, my partner came to comfort me and said, "I believe you." As long as you persist, anything can be done. " After listening to her words, I immediately cheered up and began to study again. Finally, I finally worked out the answer! I am so excited.
My opinion on scientific open courses (3)
"Ding Rinrin-"With the melodious bell, the science class began. In today's science class, the teacher brought us a very interesting experiment-copper sulfate and iron.
The material teacher is ready: a test tube filled with copper sulfate liquid, an iron bar and a piece of sandpaper. The materials are simple and the production is not difficult.
The copper sulfate solution is prepared by the teacher in advance, just mix a spoonful of copper sulfate with some water completely. "Iron bars need to be ground to be put into test tubes. Let me demonstrate it first. " As soon as the voice fell, the teacher picked up the iron bar in his hand, folded the sandpaper slightly, put the iron bar at the crease and rubbed it back and forth like chopsticks. "Do you understand?" "I see." "When you understand it, start the experiment."
Zeng Jiaming is in charge of grinding iron bars, but his method of grinding iron bars is different from that of teachers. He rubbed the iron bar back and forth on the sandpaper. "Wow, it's so hot!" I don't know if I didn't see it, but I laughed when I saw it. It turned out that Zeng Jiaming picked up the freshly ground iron bar and touched it. This freshly polished thing must be very hot. Besides, it's made of iron. Can it not be hot? Zeng Jiaming will definitely be angry. He grinded the iron so hard that he not only had nothing to offer, but also got burned. Angry, he threw the iron bar into the test tube. "One, two, three, four, five, six, seven, eight, nine, ten." Ten seconds later, I took out my iron bar and looked at it: the iron bar turned into a dress, which turned a silver-white dress into a reddish-brown casual dress; Change copper sulfate from blue to green. Zeng Jiaming was so happy that he put the unpolished end in, and when he took it out, the iron bar turned black.
Copper sulfate and iron powder become ferrous sulfate and copper. The teacher said it was because copper and iron of copper sulfate were exchanged. When I got home, I asked my mother why the iron that had not been ground in the copper sulfate family turned black, and my mother said it was a new substance.
Do more scientific experiments, and you will find that life is so mysterious and beautiful that everything is waiting for you to explore.
My Opinion on the Open Course of Science (Ⅳ)
There are many interesting scientific phenomena in life. As long as you observe them carefully, you will find them, just like last time. ...
I remember it was a Sunday morning. At breakfast, I peeled a boiled egg and put it upright on the mouth of a glass bottle. A small part of the egg is soaked in the bottle. I used to press eggs with my fingers. I pressed the egg into the bottle, but it broke into several pieces. I stared at the broken eggs in the bottle and suddenly heard my sister-in-law shout, "Laoyou, why don't you have breakfast?" What are you doing? " "God, I wonder if there is any way to put this egg in the bottle intact?" I put this question to my mother. Mom thought about it and said confidently, "It should be no problem."
I saw my mother find some pieces of waste paper and knead it into a ball. She lit the paper with a match and carefully threw it into the bottle. She said to me loudly, "Look, I'm going to do magic!" " "Then she put an egg with a shell on the bottle mouth, pressed it gently with her hand and heard a bang. The egg completely fell into the bottle.
Ah, it's amazing. What's going on here? I asked anxiously, "Oh, my God! Oh, my god Tell me, what's your secret? " God said mysteriously, "You will understand when I do an experiment." God put the candle on a small dish, then put the dish in a basin of water, let the candle protrude about one-third of the water, and light the candle. Then cover the candle upside down with a glass bottle, put some brackets on the bottle mouth, hold the bottle up a little, and let water in and out of the bottle. God also made a mark on the outer wall of the bottle flush with the water surface. The candle burned for a while and then went out. At this time, I found that the water in the bottle had reached one fifth of the hollow part of the bottle. How is that possible? God told me: "When the candle burns, use up the oxygen in the bottle, which only accounts for about one-fifth of the air." . After the oxygen is used up, the flame goes out and water is pushed into the bottle by external air pressure. In the experiment of pushing the eggs into the bottle, because the eggs with shells blocked the whole bottleneck, the outside air could not enter the bottle to replace the consumed oxygen, so the air pressure in the bottle decreased and the eggs were sucked into the bottle. "
This experiment is really interesting, which not only increases scientific knowledge, but also enriches after-school life. It seems that there are many scientific phenomena around us waiting for us to explore!
Personal Views on Open Science Courses (5)
Time flies and technology is advancing with the times. Now in this society, all kinds of things are constantly developing, even cars are unique. 1April, 960 12, after 50 years of research, Dr. Tao and I finally invented a car. This car has zero pollution and can run without refueling, because it is equipped with a device to exchange vitality with people. As long as you drive it, it is equivalent to giving it a heart and life.
This car is also equipped with a life-sensing device. When you first opened it, he recorded every cell in your body in the computer. You won't leave unless you open it yourself. The car is also equipped with a flight system. As long as you lock in a certain target, such as space, it will take you to space and let you travel in space with your family anytime and anywhere. Flying into space is no longer a dream. If you feel tired while driving, you can turn on the autopilot function, so that as long as you lock in where you want to go, he will take you. Moreover, when you rest, it will be massaged and served with coffee to relieve your fatigue.
It also has the same intimate device. On the way home, it sends a signal to inform your family that you will arrive in a few minutes, and what temperature hot water should be prepared so that you can take a hot bath as soon as you get home. Well done! If you feel that the flight speed is too slow, you can turn on the instant transmission mode and go wherever you want. But this will make the driver dizzy, so pay attention to use it! Maybe you are worried about whether so many cars will collide during the flight. I will tell you this: "No, when Dr. Tao and I invented this car, we used satellites to set the orbit." Every car has its own track, don't worry. "
The device does not produce any pollution, and is environmentally friendly and applicable.
This is _ _'s car, which greatly reduces the pollution of the earth. I believe that in the near future, our descendants will invent cars thousands of times more than this. Science and technology can not only benefit mankind, but also destroy it. It depends on how you use it and how you create it.
My Opinion on the Open Course of Science (ⅵ)
In life, science is everywhere, and sometimes it is very likely to pass through your fingertips. It depends on whether you can find him. There are many things in life that deserve our attention, and we should be good at discovering the little things in life. Often a small matter, he can cause many people to explore and think, and some even become eternal mysteries. So science is all around us. ...
I went to my grandmother's house last week; I saw grandma sewing the soles of shoes. Because the sole is too thick, it is difficult to sew. I said, "Grandma, give me the needle. I have a way to make it easy for you to sew. " Grandma said, "Good". I wiped my hair with a needle, and then returned the needle to my grandmother, who said while sewing, "It's really much easier!" " ".I said," This is actually lubrication to reduce friction! " "People have grease in their hair. When the needle wipes the hair, it is equivalent to adding lubricating oil, which can reduce the friction and make it easy to wear the needle. Say that finish, I satisfiedly smiled.
There are many such things in life! One more thing, let me tell you one thing!
The door of my room is a solid wooden door, which is beautiful and will "deform". There are always a few days in summer when it is disobedient, and it is very laborious to close the door, as if it has gained weight; It seems to be thinner in winter, and there is always a small crack when closing the door. I asked my father what was going on, and my father explained, "Maybe the wood was not dry enough when the uncle worker made the door. In summer, when the weather is hot and the temperature is high, the wooden retractable door will become fat and won't close. In winter, when the weather is cold and the temperature is low, the wood will shrink, the door will become thinner and it will not close well. This is why it expands with heat and contracts with cold. "
After listening to my father's words, I feel that there is science everywhere in my life. I must study science well!
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