But things didn't go as we expected, and they didn't find any trace. What's your mood at this moment? (It's heavy again. ) Read the second sentence by name.
4. Are 4.Sim and his friends really hopeless? What should the rescue center do? What about the satellite rescue of them? (Read paragraphs 5-8 by name)
5. How did people feel when they first got in touch with the Soviet Satellite Rescue Center? Which word in the text reflects people's mood? (worried)
6. A few hours later, when a weak radio distress signal came from the rescue center, what was people's mood? (Excited) Read paragraph 6 by roll call.
After Sim's accident, he turned to the Canadian Air Rescue Team and the Soviet Satellite Rescue Center for help. Let's look at these two sentences. (Show slides) What do these two sentences mean?
Summary: By comparison, it shows that the location of satellite search is accurate, which shows the magical function of satellite.
8. What will people think when the expedition finally finds a red tent? What did you say?/Sorry? (Name)
9. Are 9.Sim and the three of them saved? What about Sim's son? (Read the ninth paragraph by name)
Fourth, class summary.
1. After learning the text, who can tell me what the process of satellite rescue is? Show slides. Show students a series of process courseware for satellite receiving signals. )
In this lesson, we know the main content of the text, the principle of satellite rescue and the magic of satellite. This is the result of the rapid development of science and technology. I hope the students will study hard, master more scientific and cultural knowledge and make some inventions!
Verb (short for verb) Homework:
1. Copy words with new words.
2. Collect and sort out the knowledge about satellites, and increase the understanding of satellites.
3. Read the text emotionally and tell the story to your family.
Textbook analysis
Luancheng County No.1 Primary School Yang Lihua Fu Taojun
Textbook description
This is a long but well-organized article. It tells the story of the first rescue satellite saving people for the first time:1One day in September 1982, Sim and his friends flew to look for their missing son and crashed again. Just when their lives were in danger, people used rescue satellites to detect their exact location and successfully rescued them.
The first to third paragraphs explain the origin of the story. Sim's son lost his plane. Sim and his friends searched together, but the plane crashed when they searched. At the same time, it is pointed out that the natural conditions in this area are complex and it is not easy to find people, which paves the way for showing the magic of rescue satellites. The brief opening sentence explained that Sim's son was missing, which immediately aroused people's anxiety and worry. After that, "the mountains in western Canada are vast, steep and densely forested." The natural conditions in this area are complicated and it is difficult to find people. The words "looking for a person's whereabouts in such a large area and such a complex terrain" and "Dan" make people feel Sim's eagerness and determination to save his son. However, due to complicated natural conditions and bad weather, their plane crashed again, which shocked people's hearts.