Review and Experience of the Second Lesson in 2022 Tiangong Classroom (Seven Articles)

Subspace teaching activities are carried out in the way of "interaction between heaven and earth" and communicate with the ground classroom in real time. This classroom, 370 kilometers away from the earth, has exposed young people to the dream of science and technology. The following is my review and experience of the second lesson in Tiangong class. Welcome to read!

The feeling and experience of Tiangong Classroom 1 the second lesson

"The starry sky is boundless and there is no end to exploration." Yesterday afternoon, the second class of "Tiangong Classroom" started on time. Shenzhou XIII astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu once again turned into "space teachers", and held a popular science dialogue with 60 million primary and secondary school students at the China Space Station, 400 kilometers above the ground.

At present, primary and secondary school students in our city study online at home. Under the call of the school, students watched this special live broadcast in space in various ways, perceived the mystery of the universe from the difference between heaven and earth, and experienced the fun of exploration. In order to stimulate the enthusiasm of college students to pursue "scientific dreams" and realize "aerospace dreams", many primary and secondary schools have specially organized and planned related theme activities.

"Classmates, do you know what important stages our space industry in China has gone through?" Yesterday afternoon, all the students of Xinxing Primary School in Heping District watched the second lesson of Tiangong Classroom online at home. Before class, Class 4, Grade 5 held a meeting on "The Sea of Stars". Dream more "online class meetings." Mr. Hou Shengjuan, the president, contacted Zhang Haijun, an engineer of R&D Department of China Academy of Space Technology. Later, Zhang Haijun introduced the experimental content of the second lesson of "Tiangong Classroom" in an easy-to-understand language.

"Oil floating on the water is a common scene for us, but in space, because there is no gravity, water and oil cannot be separated. Students, is there any way for us to separate water from oil in space? Let's take a look at the space class together. " Before class, Zhang Haijun asked the students this question.

15: 40, the second class of "Tiangong Classroom" officially started. Three "space teachers" demonstrated the experiments of space "ice and snow", liquid bridge demonstration, water-oil separation, space parabolic and so on, and described the scientific principles behind the experiments in detail. Magical space phenomena have aroused students' yearning for space and their love for science. Applause and cheers also gathered in front of Hou Shengjuan's screen from many directions again and again.

At the same time, in Tianjin No.7 Middle School, more than 40 students from Grade One Tibetan class also collectively watched the second lesson of the school's "Tiangong Classroom". They wear national costumes and wave their national flags, expressing their pride and pride. "China astronauts are amazing! As a teenager in China, I feel extremely honored. I want to study hard and hope to grow into an excellent female astronaut in the future. " Student Tenzin Mu Wang said.

As a physics teacher, AARON Li, the head teacher of Tibet class, has been answering students' concerns on the spot. Looking at the staring, serious and excited faces, he knew that the seeds of science had taken root in the hearts of students and patriotism was stirring in every student's heart.

"As Zhou Jianping, chief designer of China's manned spaceflight project, said, China's manned spaceflight project will not be satisfied with low-earth orbit. Their dream is to send China people to the moon and Mars, and let China people become the leaders of human space exploration! Students, let's praise the motherland together, the future belongs to you! " At the end of the activity, students of Tibet class and principal Wang Baoqing sang "Singing the Motherland" together.

Thinking and experience of the second class in Tiangong No.2 classroom

In ancient times, people always wanted to launch some detectors into space. However, a single function cannot complete people's exploration of space. So, people began to think of ways: how to let people go to heaven! This time, the "Long March II rocket" and "Shenzhou XII spacecraft" were used.

Last time we went to space, we spent a lot of money. If we only go up for three or four hours and think it is not cost-effective, we want to build a place like a hotel where astronauts can live, that is, the space station.

According to the plan, Space Station 1 consists of five parts: the first part is a "manned spaceship", which mainly carries astronauts; The second one is the "Quest Experiment Module", which is used to do some experiments that cannot be completed on earth; The third is the "dream experiment module", which is similar to the "real experiment module" and is also used for experiments. The fourth is the "Tianhe core cabin", where Chinese astronauts live; The fifth type is "cargo ship", which is mainly responsible for transporting all kinds of materials. However, this plan has not been completely completed. At present, the space station has only two parts: Tianhe core cabin and cargo spaceship. It is said that in 2022, the space station will be completed.

Legend has it that there is a Guanghan Palace. On the moon, our space station floats in space. The sun radiates "energy" to the earth every day, but when we bask in the sun on the earth, the sun is far away from us and the danger is very small. Astronauts who spend too much sun in space may get cancer, so it is stipulated that the space station should not be higher than the earth 1000 km. After considering various factors such as funds and experimental results, scientists finally built a space station 400 kilometers away from the earth.

On the earth, everything you throw will fall to the ground. This is Newton's "gravity". If we stand on the flat ground and throw things, we will fall down; Then if we "throw" the spaceship at a very fast speed, it will fall to the same extent as the radian of the earth, and then the spaceship can fly along the earth. The space station flies very fast, and it can circle the earth in an hour and a half.

Since ancient times, it is impossible for people to see the whole sky on the earth. If you can see clearly from the space station, you can see far, because you stand tall.

In the space environment, we can do some experiments that we can't do on earth, such as finding some chips smaller than mobile phone chips, or things that can change color in some environments.

There are several small goals for astronauts to go into space this time: to live for about three months; Debugging all kinds of equipment; Do some incredible experiments; Get out of the cabin and see the whole picture of space and space station.

China's space station allows us to explore more mysteries of space.

Thinking and experience of the second class in Tiangong No.3 classroom

"I'm a bird, and I can't fly high if I want to …" I hummed Zhao Chuan's "I'm a bird", walking on the road, feeling a little lost. I am like a bird in a song. I am human. How can people fly? Thought of here, I am very depressed. However, I still dream sometimes: my dream is to take a spaceship rocket, fly into space, travel, find a new life planet or other tasks, hehe, that would be great! But it seems unrealistic. Shenzhou 5 just picked up Yang Liwei alone. Can it be my turn? Alas!

I went into the house and turned on the TV as usual. I saw that the announcer of CCTV news broadcast was reporting: "At 9: 00 this morning, China's Shenzhou VI manned spacecraft was successfully launched at Jiuquan Launch Center, at the expense of astronauts and Nie Haisheng." I read the news reports about Shenzhou VI carefully almost every day to understand the basic situation of Shenzhou VI, the astronauts' food, clothing, housing and transportation, the difference between Shenzhou VI and Shenzhou V and so on. I am very excited and I feel incredible at the same time. My God, in just two years, China successfully launched two spaceships!

You see, Shenzhou VI is much more advanced than Shenzhou V, and there are twice as many astronauts alone. At the same time, the flight time of Shenzhou VI also reached 1 15 hours and 32 minutes, which was several times more than that of Shenzhou V's 2 1 hour. What a big gap! In addition, there is food. Originally, God V was simple, but there are more than 50 kinds of God VI. In space, even fish-flavored shredded pork and kung pao chicken can be eaten! This can activate my brain cells: Yes! According to the current development speed, a spaceship will be launched every two years, and an astronaut will be added at a time. By 2020, should the spacecraft be able to carry nine astronauts at a time? I can't help itching and rubbing my hands. I thought to myself, I

Plan to become an astronaut and travel in space!

The necessary conditions for becoming an astronaut are: superb flying skills, solid theoretical knowledge, strong physique, good psychological quality and reaction ability. Superb flying skills, good psychological quality and reaction ability can be cultivated slowly in the future. Now I will exercise regularly to improve my physique, and at the same time I will study hard and accumulate knowledge, hoping to become an astronaut when I grow up.

I believe that in the near future, my flying dream will come true, and I will definitely realize this dream!

Thinking and experience of the second class in Tiangong No.4 classroom

Xinghai didn't stop, and space heroes came out again. At 0: 23 on June 6th, Beijing time 10, Shenzhou XIII manned spacecraft carried three astronauts from China into space, namely Zhai Zhigang, Wang Yaping and Ye Guangfu, who became the second batch of "residents" of the space station and the core module of China. The live broadcast of the Tiangong classroom left a deep impression on people.

From the launch of Shenzhou-1 in 1999 to the launch of the first astronauts of China Space Station in June 20021,China people's desire to "settle down" in space is being realized step by step. Over the past 22 years, we have witnessed the history of China's manned space flight from weak to strong, and netizens on social media have also praised China's space flight: "The pace of progress has never stopped" and "Great China, Great China people"!

Things change, and years are like poetry. Every launch, flight and transcendence of China space show the world our space journey from scratch, from existence to excellence, and from earth to space. This process seems to be an understatement, but the real journey is unforgettable. During the National Day, the film My Father, which tells the story of parents and grandparents' silent sacrifice and dedication to the construction of new China, exploded on the screen. One chapter, Poetry, is a tribute to China's space flight. In the eventful autumn of early research in the Gobi Desert, young couples who are fireworks sculptors and space engineers told their children: "Mom and Dad are people who write poems in the sky." After her husband died, her wife propped up her career and family with weak shoulders. This touching scene made the audience break through the defense line. If patriotism is the deepest emotion, then struggle is the longest confession. The figures dedicated to national rejuvenation and the aerospace industry, together, are a magnificent human poem.

"In China, looking up at the stars. There is poetry in the heart and home in the distance. " Speaking of poetry, the name China Aerospace has the romantic connotation of China people. The lunar exploration project is called "Chang 'e", the lunar rover is called "Jade Rabbit", the global positioning system is called "Beidou", the space station is called "Tiangong", and the Mars probe is called "Tian Wen" ... As an uninterrupted civilization among the four major civilizations in the world, Chinese civilization has countless fairy tales and historical legends, which sparks with China's cutting-edge high technology, making China's space flight both "traditional" and "modern". Named the manned spaceship "Shenzhou" is full of beautiful meanings.

China people changed from "tourists" to "tenants" when the Shenzhou 13 manned spacecraft rushed to the universe-the change of "identity" represents the enhancement of national strength, and this kind of national pride arises spontaneously, which should be remembered in the hearts of every Chinese son and daughter. This space lecture is not only full of creativity, but also means that the legend of China's space flight will be extended to more profound and unknown fields. China's space flight is moving towards a higher goal, which is the "heart yearning" for the boundless space. I believe that this poetic confession in the name of the country will eventually condense into a common aspiration of "struggle, Chinese children"!

Thinking and experience of the second class in Tiangong No.5 classroom

"Flying dreams never lose weight, and scientific dreams have unlimited tension." 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, becoming 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.

Thinking and experience of the second class in Tiangong No.6 classroom

The people of China have been dreaming of flying for thousands of years. From the fairy tale of the Goddess Chang'e flying to the moon, the magpie meeting of the Cowherd and the Weaver Girl, Kuafu's practical feat of chasing the sun to flying thousands of families, and the flying murals of beautiful women in Dunhuang Grottoes, all show the Chinese nation's yearning for flying into space and roaming the universe.

From1999165438+1October 20th to 2021June/0/7th, China successfully launched 12 shenzhou spaceship, which witnessed the great progress of China's manned spaceflight project. One-day tour from Shenzhou 5 astronaut Yang Liwei to Shenzhou 12 March tour; Since Zhai Zhigang put the five-star red flag of the people of China into space, it has proved the rapid development of China's space industry.

101October 16, Shenzhou 13 will also fly into space, and three astronauts will complete some scientific research tasks in the spacecraft, namely Zhai Zhigang, Wang Yaping and Ye Guangfu. Zhai Zhigang is an astronaut of Shenzhou VII, the first person to insert the national flag of China into space, with rich experience; Wang Yaping is the space teacher of Shenzhou-10 and the first teacher in China to stand on the world podium. Ye Guangfu is the first time to go into space, and his quality is excellent in all aspects. The three of them will live in space for six months and complete five main tasks.

First, carry out key technical tests of space station assembly and construction, such as mechanical arm assisted cabin transposition and manual remote operation;

The second is to carry out 2-3 extravehicular activities, install the dual-arm combined adapter and suspension device of large and small manipulators, and prepare for the subsequent space station construction tasks;

The third is to further verify the health, life and work support technology of astronauts staying in orbit for 6 months;

The fourth is to carry out scientific and technological experiments and applications in aerospace medicine, microgravity physics and other fields, and carry out diversified popular science education activities;

Fifth, comprehensively evaluate the functional performance of each system in the project to perform space station tasks and the matching between systems.

This time, Wang Yaping will complete the extravehicular mission and become the first female astronaut in China.

Here, I wish the three astronauts a safe space in advance and successfully complete their mission.

Thinking and experience of the second class in Tiangong No.7 classroom

On the morning of June 20th 10, Wang Yaping, an astronaut of Shenzhou X, gave a space lecture. The first space lecture will be held then. According to the plan, female astronaut Wang Yaping will be the keynote speaker, thus becoming the first "space teacher" in China. At that time, local education departments and middle schools will organize the viewing, and Tiangong-1 will also become the "highest" platform in China.

1. Teaching small experiments in space

Teacher Yaping told us that the special mass measuring instrument in space is made according to Newton's second law. The force on an object is equal to its mass times its acceleration. In the mass measuring instrument, the spring cam mechanism can generate constant force, and the speed measuring system can measure the acceleration of the object. According to Newton's law, the mass of an object can be measured.

2, small ball simple pendulum experiment:

Fix it with a bracket, tie a small ball with a thin thread at the front end of the swing shaft, then pull the ball up to a certain position and loosen your hand. As a result, the ball is suspended in the current position and does not swing back and forth like the ground. Why is this? Think about it. Tell your answer!

Teacher Yaping gave the ball a thrust, and the ball actually made a circular motion around the pendulum axis. This is because: as long as we give the ball a small initial velocity in weightlessness, the ball will make a circular motion around the pendulum axis. But on the ground, we must give the ball a large enough initial speed to achieve it. Different skies have different physical phenomena. Popular science is everywhere. Pay active attention to it and let us know more.

3. Gyro experiment:

Suspend the stationary gyro in the air and give it a disturbing force. At this time, the gyro began to roll, and the axial direction changed greatly. But when the gyro rotates first and then gives a disturbing force, will it still move as before? At this time, the gyro does not roll, but moves forward with the shaking. Isn't that interesting? Gyroscope has good axial alignment when it rotates at high speed on the ground, and it is also applicable in space. Therefore, many equipments in Tiangong are oriented by gyro combination, and some instruments are made by gyro orientation principle to measure the attitude and orbit of spacecraft.

4. Water film experiment:

With a metal ring and a water bag, gently put the metal ring into the water bag and wait for a miracle! Pull out the metal ring slowly, and a large water film will be formed on the metal ring. In weightlessness, ordinary water can also form a beautiful water film, which is difficult to achieve on the ground. Do the students know why? Leave it to everyone to think about!

When teacher Yaping gently injected water into the water film, the water film gradually became thicker. As more and more water is injected, the water film becomes a shiny water ball. The water film has become a big water balloon, a strange phenomenon in space!

5. Water polo experiment:

Inject red liquid into the water polo, and the red will slowly disperse in the water polo, and finally form a big red water polo. Very beautiful! What a wonderful sight!

Question: "Hello, astronaut teacher. Just now, you demonstrated many wonderful phenomena about water. So is this water brought from the ground to Tiangong-1? Can domestic water in space be recycled? "

Commander Nie Haisheng told everyone that the domestic water used by Tiangong-1 was brought from the ground. Recycling water in space is very important, but it requires advanced technology and complex equipment. In the short-term flight, disposable water will be used, and in the future, our space station will adopt advanced resource regeneration and recovery technology.

"Hello, astronaut teacher, what's the difference between the scenery you see in space and the ground? Can you see UFOs? Will the stars still twinkle? "

Teacher Yaping replied, "We can see the beautiful earth, sun, moon and stars through the hanging window, but so far, we haven't seen UFOs. Because we are outside the atmosphere, there is no obstacle or interference from the atmosphere, so the stars we see are particularly bright, but they don't twinkle. Similarly, because there is no atmospheric barrier, the sky we see is not blue, but dark black. In addition, to tell you a wonderful phenomenon, we can see the sunrise of 16 every day. "

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