In the third class of Tiangong class, astronauts had real-time interactive communication with teachers and students in the ground class through video call, and experts in the ground class also carefully analyzed relevant scientific issues. The following is 10' s 300-word composition collection about the reflection of the third lesson in Tiangong classroom. I hope I can help you.

Lesson 300 Comments on Tiangong Classroom 1 The third lesson of Tiangong Classroom officially ended. It should be said that this is a feat of China's space industry, which not only indicates that China has been able to skillfully use manned space technology, but also means that China's space science and technology has extended an olive branch to the field of education.

China astronauts passed on scientific knowledge in 300 kilometers of space, showed the charm of the universe to the world with various space experiments, and inspired countless students' interest in mysterious space. Teacher, preach and teach. However, teaching scientific knowledge in person by giving lectures in space can only be a feat that can be accomplished in modern human history.

When Confucius was studying in Xinglin, did he ever think that one day, his descendants would go to space like Chang 'e and preach in space to solve their doubts? It is said that "a teacher is the most glorious profession under the sun", but China spilled the glory of this profession into space, so that the whole universe was bathed in the brilliance of human nature. If the vast universe is a book, then the powerful comprehensive national strength and solid space technology are undoubtedly the wisdom keys to open this book.

China astronauts' teaching in space has opened a magical space journey for us, and their Voice of China is also infecting and touching everyone around us. However, the unknown vastness and far-reaching educational significance of space also put forward higher requirements for China's manned space flight. If we want to absorb more nutrition from the universe, we must vigorously develop manned space flight and education. And we also hope that this space exploration can take us to more distant places, so that more places can hear the "good voice of China." This space lecture has aroused students' inner love for learning, which can be transformed into simple feelings of loving the motherland, learning and science, so that we can be less impetuous, more focused and strive to be future successors in our daily study.

Lesson 3 Review the Tiangong Classroom 300 words 2 I could have gone out for air before the third class this afternoon. As a result, I just walked outside the door, but was called back to the classroom by the teacher. When I saw it, I immediately became interested. The last time was a long time ago, but I still remember it clearly. I wonder what will be new this time.

As we all know, space is very different from our earth, and part of it is reflected in gravity. Space is a kind of microgravity, so some things that are used to on earth are difficult to do in space, but it is precisely because of this that it is meaningful to study in space.

The first is the space "ice and snow" experiment. There is a magical crystal-sodium acetate, which is like ice but not ice. It takes some technology to do this experiment on earth, but it's a different story in space. First, some supersaturated sodium acetate solution was extruded and suspended in the air. The "hot snow" appears when the sodium acetate crystal is touched, which is amazing.

Then the liquid bridge experiment. In microgravity environment, the surface tension of water expands infinitely. Therefore, dropping water on the glass plate and connecting the water on the two glass plates will form a rare water bridge.

Then the experiment is the water-oil separation experiment, which is even unnecessary on earth. In any case, water and oil will not mix together because different densities will have different buoyancy. But if it is in space without buoyancy, oil and water will naturally mix together. At this time, centrifugal force is needed, and oil and water will be separated. Centrifuges and even space stations use this principle.

Finally, prove Newton's first law. Everyone who has studied physics knows that this experiment cannot be proved by experiments, but in space, it is one step closer to the experimental proof, because only air resistance and microgravity are at work.

This class, I benefited a lot, at the same time, I also understand the importance of mathematics, science and chemistry. I can't learn well or even understand.

For more than 3,000 years, we have been interested in the universe and stars. From the legendary the Goddess Chang'e flying to the moon to the realization of manned spacecraft, we in China have made a great leap from dream to reality.

China's Space Exploration As early as BC 10 century, China people explored the principle of making rockets.

China is one of the earliest countries in astronomy in the world, and the earliest astronomical observations can be traced back to thousands of years ago. There are abundant records of astronomical phenomena in the Oracle Bone Inscriptions of Yin Ruins unearthed in Anyang, Henan Province.

We ancient people have always had extraordinary dreams and longings for Tianyu and space. The goddess chasing the sun in the Goddess Chang'e flying to the moon and Kuafu, the legend that the goddess fills the sky, the goddess flying in the clouds in Dunhuang murals, and the records of countless astrologers staring at the starry sky are all records of the ancient people's dreams of flying.

Li Bai, a poet in the Tang Dynasty, longed for "we both hold high the idea of going far away, who wants to embrace the sun and the moon in the sky". Su Dongpo, a poet in the Song Dynasty, was nervous about "going home by the wind, fearing a magnificent building" ... all these reflected the curiosity, yearning and speculation of the ancient people in China about Langlang space. As for The Journey to the West's "somersault cloud" of "the Monkey King", it is the romantic idea of human flying to the extreme.

Ancient monarchs attached great importance to and worshipped heaven, believing that the change of celestial phenomena was related to the rise and fall of the country. Astronomical observation departments, such as Qin, Sitiantai and Taishiyuan, have been set up throughout the dynasties to observe the changes of astronomical phenomena, so as to predict good or bad luck and guide agricultural development. So that ancient astronomy in China was very developed and was in the forefront of the world for a long time.

These stories and poems reflect the ancient people's desire for flying. According to historical records, a man named Wan Hu took the first step to fly. Wan was an official of the Ming Dynasty. In order to realize his space dream, he designed a chair with 47 rockets tied to it and connected it with a kite in the shape of a big bird. He imagined flying into the sky with the thrust of the rocket, and then landing smoothly with a kite. Later, he sat on it himself and asked his relatives to tie himself up and light the rocket.

There was only a bang, and the birds soared into the sky. Then thousands of families and their flying devices turned into a gorgeous fireball-like fireworks and gradually dissipated in the air.

Wan Hu's feat cost him his life, but his experiments made great contributions to human exploration of space and understanding of the universe. 1970, in order to commemorate the feat of flying, the International Astronomical Union named a large crater on the back of the moon "the crater of ten thousand years".

Later, on April 24th, 1970, with the successful launch of China 1 artificial earth satellite Dongfanghong-1, it marked that the people of China began to explore the mysteries of the universe, and used space peacefully for the benefit of mankind.

Today's China is ahead of the world in its transcendental achievements. Zhu Rong explores fire, xi He visits the sun, and Heaven and Earth all turn the myths and legends in China's ancient books into reality.

Today, three astronauts from China opened the third lesson of "Tiangong Classroom" for students all over the country at our own Tiangong Space Station in China, which opened a new chapter in China's space exploration.

We are the generation that witnessed the prosperity of our motherland. Teaching in space is to prove the road to prosperity of the motherland, and we will always wish the great motherland more and more powerful.

Lesson 3 Review of 300 Words in Tiangong Classroom 4 Recently, the school organized a unique movie-watching activity, and the Tiangong classroom was broadcast live.

"5432 1!" The most exciting moment came, and we didn't even blink. "Welcome our teacher Yaping to share her activities on the spaceship with us, …" With the voice of the host, the lecture began. Teacher Yaping shared many interesting events for us. At the beginning of the course, an astronaut teacher performed a difficult movement for us. I saw him standing firm on Tiangong No.1, then tilted his feet and made a meditation movement, but he didn't land, but floated steadily. Teacher Wang Yaping just gave him a nudge and he floated behind the capsule. It's amazing! This is weightlessness. In space, everyone is as light as a swallow, which is really enviable!

What I remember most is the experiment of water polo. Teacher Wang took out a water bag to give an astronaut water, then took out a metal ring, put his hand into the water bag, gently pulled out a water film, and let it swing back and forth, just floating out one small drop after another. At this time, Mr. Wang carefully put the metal ring on the table and added water to it, slowly forming a water polo. She took out the bubbles inside and squeezed them into two bigger ones. Teacher Yaping took out an origami flower made with her daughter and combined the physics knowledge she had learned. Mass is an attribute of the object itself. When it is brought from the earth to space, the mass is constant. Spinning on the water model is magical and beautiful, which really opens my eyes.

Good times are always short, and the explanation given by teacher Yaping is over. China astronauts' teaching in space has opened a magical space journey for us, and their Voice of China is also infecting and touching everyone around us. However, the unknown vastness and far-reaching educational significance of space also put forward higher requirements for China's manned space flight. If we want to absorb more nutrition from the universe, we must vigorously develop manned space flight and education. And we also hope that this space exploration can take us to more distant places, so that more places can hear the "good voice of China."

Lesson 3: Review of 300 words in Tiangong Classroom 5 "Oh, my God! Awesome! " One amazing voice after another came from the classroom. What makes the students so excited? It turns out that they are enjoying a lecture from space.

"What is space like?" I believe that students have had such questions. With the deepening of human exploration of space, the mysterious veil of space has been gradually unveiled. In order to stimulate students' enthusiasm for exploring the universe and let them feel the mystery of space, "Tiangong Classroom" was launched!

How to drink water in space? How to get there? How to sleep? Students' questions are like bubbles floating on the water, one after another, but don't worry, the commentator and the teacher will patiently answer them for you.

How to drink water in space? This is an interesting question. As we all know, there is no water in space, so how to use it in space? Is it necessary to carry a few tons of water on the space capsule? Of course not! Only a small bag of water and a set of reclaimed water device can meet the daily water consumption of astronauts in one day, and this reclaimed water is no different from raw water, which can be described as saving the environment! Moreover, in space, water is a magical substance. According to our daily experience, we know that not everything will sink when it falls into the water. This is because water has buoyancy, and this force will hold the object so that it will not sink. But in space, the buoyancy of water is almost non-existent, which has produced an interesting phenomenon-things will be suspended in the water and stand still after falling into the water! How wonderful!

I believe all the students know that there is weightlessness in space, so if you want to walk in the capsule, you must use the special spikes and handles in the capsule. In teaching, teacher Ye Guangfu kept waving his left hand in the space capsule, making his body suspended, which is also the reason for weightlessness. According to this feature, the commentator specially made a water polo, which is crystal clear and the water inside is still flowing. It's amazing!

We know that people will float in the space capsule, so how should we sleep in space? In order not to be "lifted off in situ", astronauts need to sleep in special sleeping bags and tie themselves up to prevent them from drifting around. To my surprise, the astronauts will see the sunrise on 16. It's amazing!

Space is magical and wonderful. I hope the astronauts can successfully complete their tasks and return to Earth. I hope one day we can learn more about the wonders of space. Finally, I wish our motherland's space industry more and more prosperity!

Lesson 3: Review of 300 words in Tiangong Classroom 6 "Flying dreams never lose weight, and scientific dreams are infinitely tense." Eight years ago, "space teacher" Wang Yaping gave a lesson to more than 60 million students in China. Now she is once again on a trip to space, and will become the first female astronaut in China and the first female astronaut in China. Looking at the sound, the mysterious and distant deep space is getting closer and closer to us, and the beautiful "flying dream" is becoming a reality.

/kloc-in the early morning of 0/6, Shenzhou XIII was successfully launched, less than a month after the successful return of the Shenzhou XII manned spacecraft. A new "space travel trio" composed of Zhai Zhigang, Wang Yaping and Ye Guangfu went to China Space Station by manned spacecraft. This mission will achieve a number of "firsts" such as radial rendezvous and docking with the core cabin, transfer from a rescue ship to a formal mission ship, and will carry out more space science experiments and technical experiments on the basis of the Shenzhou 12 mission.

"Sit on the floor, travel 80,000 miles a day, and look at thousands of rivers." In 2003, the Shenzhou 5 spacecraft was launched with Yang Liwei at Jiuquan Satellite Launch Center, and it took 2 1 hour and 23 minutes to successfully return to the ground, realizing the Chinese nation's dream of flying for the first time. Since 18, there have been seven manned flights, with the interval from to. The frequency of "business trip" is faster, the contact is smoother and the preparation is more leisurely, which shows China's ability to stand on its own feet in science and technology. From "one-day tour" to "seasonal tour" to "in-depth tour" lasting for half a year, the "space business trip" takes longer, takes bigger, farther and firmer steps, and shows the self-confidence and pride of a big country.

From "Two Bombs and One Satellite" and "the Goddess Chang'e flying to the moon" to "Beidou" to guide the way, "Tiangong" to range rover and "Tian Wen" to explore the fire, and then to "Shenzhou" series to roam the sky and "xi He" to chase the sun ... Breakthrough again and again, step by step, the Chinese nation's exploration of space extends from the moon and Mars to the sun; As far as China people's eyes are concerned, they are looking up at the bright starry sky, searching for dark matter and gravitational waves, and even deeper unknown areas in space.

"The romance of China astronauts is to turn myths into reality". Indeed, in the vast space, more and more China astronauts are writing the romantic feelings of the Chinese nation for the vast starry sky into realistic poems to explore space. According to the arrangement, the astronauts of Shenzhou XIII will stay in orbit for six months, and China people will spend the Spring Festival in space for the first time. Looking forward to the New Year's Eve, I can hear the blessings of my compatriots from space for the first time.

On the afternoon of July 23rd, Shenzhou XIII astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu will give a second space lecture at the China Space Station. This space teaching activity is still carried out in the way of interaction between heaven and earth. The three astronauts will introduce and show the working and living scenes of China Space Station in orbit, demonstrate various scientific phenomena, and communicate with the ground class in real time to spread the knowledge of manned space flight and stimulate our interest in science.

The astronauts' clear thinking, smooth expression and accurate experimental demonstration left a deep impression on the students. We have to admire their extraordinary wisdom, excellent technology and almost perfect physical quality, which can certainly reflect their spirit of diligence, Excellence and pursuit of Excellence. Their performance sets an example for us and is worth learning.

Xinghai has not stopped, things have changed, years are like poetry, and the pace of exploration has never stopped. We will follow the example of astronauts, dare to overcome all difficulties and obstacles and dare to climb the peak of space science and technology. I believe we can cross the sea of stars and make even more extraordinary achievements.

Lesson 3 Review of Tiangong Classroom 300 words 8 Today, we watched Tiangong Classroom online for the second time, and the knowledge from the starry sky also gave me more different feelings. Among the five experiments, the fourth experiment, parabola experiment, impressed me the most. In the life of the earth, the objects we throw will fall in a parabolic direction due to the gravity of the earth, that is, gravity. In the case of weightlessness in space, after being thrown out of our hands, an object will move in a straight line at a uniform speed in the original direction, which coincides with the content of Newton's first law, the physics we recently studied, so the universe still maintains it.

The live broadcast also showed us the candlestick and Meng Tian that will be docked with the Tianhe core cabin. China people will never stop marching towards the universe, keeping their own unique romance, and I will definitely have the determination and confidence to explore up and down in my future study and life.

Lesson 3 Review of 300 words in Tiangong Classroom This semester, we learned a text called "The Millennium Dream is Today". Since then, the dream of traveling in space has quietly sprouted in my heart. Today, I can finally have a communication with the astronauts.

Space is really wonderful! Three astronauts took us to do many interesting experiments. There are experiments to turn a drop of water into ice hockey, to build a bridge with a drop of water, and to separate water from oil, among which my favorite is the small experiment of water-oil separation.

First, astronauts on the space station and students on the ground shake bottles filled with water and oil, so that water and oil can be fully integrated. Because of the gravity on the earth, water and oil can be separated soon, but the space station has no gravity and has always been one. Then, the astronauts tied the bottle with a rope and shook it in a circle. Then the moment to witness the miracle came, and water and oil were separated by centrifugation. Looking at one magical scene after another, I feel that science is endless.

Although I still don't understand many technical terms, I have benefited a lot. Exploring space has a long way to go, and it has also inspired my curiosity about the future world.

Lesson 3 Review in Tiangong Classroom 300 words 10 This afternoon, we watched the wonderful and unusual lesson 2 in Tiangong Classroom. This class is taught by astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu, who are 400km away from us.

In class, the teachers demonstrated the space "ice and snow" experiment, the liquid bridge demonstration experiment, the oil-water separation experiment and the parabolic experiment in orbit, introduced the high microgravity and containerless experimental cabinet in the core cabin, and also showed us the progress of space science experiments carried out in this mission. This special class, let me know a lot of high-tech experimental equipment and interesting physics experiments. At the same time, it also made me understand the difficulties and hardships in the development of manned space flight in China. The efforts of countless scientists have made us stand at the peak of the development of manned space flight in the world. Here, I admire the tenacious will and firm belief of our predecessors. When I grow up, I must contribute my strength to the development of the motherland, so that we, the Chinese nation, by going up one flight of stairs.