Tiangong Classroom is about to ring the class bell. This is the second time that Chinese astronauts have taught in space.

On June 20, 2013, astronaut Wang Yaping gave the first space teaching with the assistance of Nie Haisheng and Zhang Xiaoguang. More than 60 million primary and middle school students across the country watched the live broadcast of the lecture, sowing the seeds of chasing aerospace dreams in the hearts of a generation.

Let us look back at the fascinating space teaching eight years ago, and the stories behind the class.

  This time the space lecture was lectured by Wang Yaping, the commander Nie Haisheng was the assistant teacher, and Zhang Xiaoguang was a guest of space photographers.

At the beginning of the experiment, Nie Haisheng first performed a difficult movement of "meditating in the air" to show the weightless environment he was in.

  The simple, ingenious and attractive opening design, coupled with Wang Yaping's playful and vivid expression, attracted rounds of applause from the students.

  Astronaut Wang Yaping: In order to be a good space teacher and how to teach this space well, it really took a lot of thought. Later, I told many people around me, my friends, my comrades, and my family. , Including I thought of a very good method later, I recorded the video of the trial lecture, and I went back to watch it myself.

Sometimes someone tells you that you have a problem, but you can't feel it, but you can find a lot of problems by picking the fault for yourself.

For example, I added an action in this place to attract everyone more. What kind of tone is more affinity for this place.

  In the next mass measurement experiment, using the special "mass measuring instrument" in space, Nie Haisheng measured his weight of 74 kg, and showed his classmates that using "Newton's second law", the weight can be weighed even in a weightless environment. Methods.

The pendulum motion experiment and the gyro motion experiment are carried out simultaneously in space and on the ground, allowing students to more intuitively understand the scientific principles behind physical phenomena that can only be realized in space.

The experiment of making water film and water polo showed the surface tension of the liquid to the students.

The crystal water ball mirrored the big eyes of the space teacher Wang Yaping, and it was frozen in the memories of many children.

  Astronaut Wang Yaping: In fact, for space teaching, many people may have seen only 5 small experiments in just 40 minutes, but in fact, many people have put in a lot of effort behind the success of this space teaching. It is also a result of the close coordination of many systems, which requires the support of a huge technological force.

  This time the space teaching will transmit two-way real-time teaching images through the Skylink data "transfer station", and realize the interaction between the world and the earth. The students learned rare physics knowledge in real-time video questions and answers, which inspired the vast number of primary and middle school students to yearn for space. , Enthusiasm for learning science and technology knowledge.

  Astronaut Wang Yaping: This time, 60 million students from 80,000 schools across the country watched the live broadcast simultaneously. This has played a very good role in cultivating young people's interest in advocating science and exploring the mysteries of space. It is very meaningful.

I think a pioneering model like space teaching is very important.

Teaching in space just fills this gap and is also a precedent.