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1、Listening and discussing,Unit 4 Astronomy: the science of the stars,Warming up,Before listening, look at this picture. Who is he? How do you spell his English name? And how do you pronounce it?,What do you know about this man and his idea about gravity? Discuss in pairs. Then tell the class.,What do
2、 you know about him and his idea on gravity? Discuss in pairs. Then tell the class.,What do you know about Albert Einstein and his idea about gravity? Discuss with your partner again. Then tell the class.,What do you know about him and his idea on gravity? Discuss in pairs. Then tell the class.,Who
3、is this person? What is he famous for? Do you know something about him? What is his idea about gravity? Discuss with your partner. Then report back to the class.,Pre-listening,First, look through the three summaries in Exercise 2. Try to guess what will be the content of the listening text. A. The t
4、ext is about how three scientists wanted to find out about the beginning of the universe. B. The text is about how the idea of gravity has developed over a long period of time. C. The text is about the importance of three scientists and their work.,And then what is wrong with the other two summaries
5、? Can you give your reasons?,While-listening,Now we are going to listen to a talk about gravity. Listen carefully and try to get the main idea of it and give your reasons. While listening, put down the key information.,A. The text is about how three scientists wanted to find out about the beginning
6、of the universe. B. The text is about how the idea of gravity has developed over a long period of time. C. The text is about the importance of three scientists and their work.,MAIN IDEA,1. Why summary A is not true? Because the three scientists wanted to explain how the universe worked and not how i
7、t began. 2. What is wrong with summary C? Because it is too general and does not give enough detail about what the listening passage is about.,Listen to Part 1 again and fill in a chart about Newtons idea and development. Discuss with your partner and then share your answers with the whole class.,La
8、rge bodies have a force which pulls things towards them.,The bigger the object, the stronger the gravity.,Listen to Part 2 again and fill in another two charts. Discuss with your partner and then share your answers with the whole class.,In space large objects make space and time bend; the larger the
9、 object,the further space and time bends.,Time goes slower in very strong gravity.,Black holes have a very large mass and pull things towards them.,If you go over the edge of a black hole, you cannot get out; but if you do not, you may be able to escape.,Post-listening,Try to tell your partner the development of the ideas about gravity according to the charts above.,Homework,Write an email to your penpal to describe the ideas about gravity.,
