1、英语人教版新课标必修3Unit 4第4-5课时教案Unit 4 Astronomy: the science of the stars教学设计Period 4 Listening and speakingStep I. Lead-in Let 2-3 students retell the passage learnt in the first two periods. Revise some important words and statements.Remind the students of October 15th 2003 when Yang Liwei went up into
2、space. (showing pictures or Videos in possible)List the following questions before listening:l What education and experience do you need to become an astronaut?l Do you think there are any special requirements?l What kind of a person makes a good astronaut?l What problems do you think he/she would h
3、ave in space?(Students report back to the class in fours)Step II. Listening ( P62)Listen to parts 1 and 2. Write down the main idea.Then listen to part 1 finish exercise 3 and part 2 to finish exercise 4.Questions Yang Liweis answers When was the most exciting moment?What surprised him?What did he d
4、o? When his spaceship lifted off the ground he knew he was really on his way into space.The beauty of spaceHe watched all his instruments and stayed calm.Information on Yang Liwei, the astronautEducationHe got his degree.TrainingHe trained for ten years to fly airplanes and then to fly a spaceship.P
5、hysical qualities Smaller than 170 cm; less than 70 kg.Personal qualitiesCalm, hard-workingListen again (if necessary) and fill in the blanks in exercise 5.Step III. TalkingThis task asks the students to work in pairs and give a friend a number of “ dos” and “donts” about going into space.Remind the
6、 students of having discussed some problems before reading “A VISIT TO THE MOON”. Brainstorm a list based on what they remember in pairs.Compare the ideas with another pair and make a report to the class.Make suggestions either to avoid or to solve the problems listed in groups of four.Give some Sam
7、ple dialogues:Step IV. Speaking taskThe purpose of this task is to use the information gained from the listening text and reading passage in a new situation.Before the task, work out some questions to ask. For example:l What was the most unexpected thing you found out about “black holes”?l If you ca
8、nnot see a “black hole”, how do you know you have got close to it?l What was the most frightening thing that happened to you on this journey?Prepare the answers to the questions in pairs.Suggested answers to the questions above:l Most unexpected thing: the “black hole” threw out material as well as
9、swallowing objects.l Knowing when we reached it : You only know you are close to a black hole by seeing things going around what appears to be an empty space. The black hole cannot be seen.l Most frightening experience: when the gravity of the “black hole” was pulling us slowly into its “mouth”, and
10、 then the spaceship moved around the hole; I was terrified because I thought we would be swallowed by the “hole”.Practise the interview in front of the class in pairs.Step V. HomeworkPeriod 5 Integrating skillsStep I. Revision Retell the reading passage. Step II. Listening and discussing (P30) Look
11、at the pictures and the exercises and guess what the listening is about.Listen to parts 1 and 2 for the fist time to choose the best summary of the listening text.The text is about how the idea of gravity has developed over a long period of the universe.Listen again to finish the chart in exercise 3
12、:Isaac NewtonAlbert EinsteinStephen HawkingIdea Large bodies have a force which pulls things towards themIn space large objects make space and time bend; the larger the object, the further space and time bendsBlack holes have a very large mass and pull things towards them towards their edge.Develop-
13、ment The bigger the object the stronger the gravityTime goes slower in very strong gravity.If you go over the edge, you cannot get out; but if you do not, you may be able to escape.Step III. Reading (P30) This reading uses information from the listening text above. It is a science fiction story whic
14、h imagines what it might be like if an astronaut visited the Moon.Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping and how his weight changed.Suggested sentences: 1. The pull of gravity became very strong as he left the earths atmosphere. His weight
15、 is normal.2. It disappeared when he was in space. He is weightless.3. It was very light when he was on the moon. He weighs less than on the earth.4. Step IV. Reading Task (P66) Remind the students of the knowledge of “black holes”.Read the passage to discover the new ideas about “black holes”.Old i
16、deas about “black holes”Was this what we found?New ideas about “black holes”Black holes cannot be seenYesYou can only “see” it by watching the movements of the objects caught by its gravity.Gravity pulls objects towards them.YesObjects go round outside the edge of the “black hole”.YesAll objects mus
17、t go into the “black hole” when they are caught by its gravityNoThey can be thrown far from the “black hole” by its energy.Step V. Writing task (P67) The purpose of this writing task is for the students to use the information they have gathered on astronomy and their question to each other to write an interesting and lively newspaper article.Analyze the sample writing on page 67 with the students .Leave a writing task as homework.
