Unit 4 Astronomy教案.docx

1、Unit 4 Astronomy教案Unit 4 Astronomy: the science of the stars 单元教学目标 技能目标Skill GoalsTalk about the science of the stars, the development of life and space travel and gravity.Practice giving instructions.Practice talking abut problems in study or life.Learn to use Noun Clauses as the subject.Learn to

2、write an essay to show your problems and the way to overcome them.词 汇1 四会词汇astronomy, system, religion theory atom billion globe violent carbon atmosphere unlike fundamental harmful acid chain multiply oxygen exist thus dioxide puzzle biology biologist gravity satellite gentle physicist climate cras

3、h spaceship pull float mass2认读词汇astronomer, biochemistry, geophysics, solar, Big Bang, vapor, nitrogen, dissolve, amphibian, reptile, generally, mammal, global, comet, Issac Newton, Albert Einstein, Stephen Hawking, lessen, weightlessly, cabin, exhaust, exclaim3 词组solar system, in time, lay eggs, gi

4、ve birth to, in ones turn, carbon dioxide, preventfrom, block out, cheer up, now that, break out, watch out语法Noun Clauses as the subjectNoun Clauses as the subject is also called the Subject Clause. That means a Noun Clause serves as Subject in the sentence. The words which are used in this Noun Cla

5、use are: that, whether, who, what, which, when, where, how, why, etc.The First Period Intensive ReadingTeaching goals 教学目标1. Target language目标语言重点词语：theory, atom, billion, globe, violent, carbon, atmosphere, fundamental, harmful, acid, multiply, oxygen, exist, prevent, dioxide2. Ability goals 能力目标a.

6、 Enable Ss to talk about the science of the stars, the development of life and space travel and gravity.b. Understand the text and answer the following questions:c. Enable the Ss to understand the details about the passage, choosing the correct answer according to the text and put the order of devel

7、opment of life into a time line and answer questions.d. Retell the passage using key sentences.3. Learning ability goals 学能目标Enable Ss to learn how to talk about the beginning of life on the earth.Teaching important points教学重点a. Talk about the beginning of life on the earth.b. Discuss the order of d

8、evelopment of life.Teaching difficult points教学难点a. Understand the beginning of life on the earth.b. Discuss the questions:What will our future be if the earth may become too hot for the lives on it?Why are humans the cleverest animals on the earth? Teaching methods教学方法a. Skimming and scanning.b. Ask

9、ing-and-answering activity to check the Ss understanding of the text.c. Individual, pair or group work to finish each task.d. Discussion.Teaching aids教具准备A recorder, a computer and a projector. Teaching procedures & ways教学过程与方式Step I PresentationT: Hello, everyone! Today well come to Unit 4 Astronom

10、y. Before that I have a question: Where do we come from? Or we can say: Who are our ancestors?Student:.T: Very good! Can you put them in right order?S7: Amphibians, Reptiles, Dinosaurs, Mammals, Beijing Ren.T: Do you know what it was like before life appeared on earth?S8: It was full of water, perha

11、ps.T: Before that, what was it like?S9: Sorry, I dont know.T: Do you want to get more information? Today well learn something about How Life Began on the Earth. Turn to Page 25. Lets come to Warming up first.Step II Warming up 1. Read the three questions, while the students listen and follow.2. Give

12、 the Ss several minutes to discuss the questions.3. Collect answers from the whole class.4. Check the answers while discussing.T: Ill read the three questions for you. You should listen to me carefully. (If students dont know how to discuss, show them an example.) For example, medicine. When someone

13、 gets serious illness, he will go to the hospital. The doctor will examine him. He will take his temperature, measure his blood pressure and give him an X-ray, or a CT. For the whole process of the examination, what kind of science has been used?S1: Biology.S2: Chemistry.T: So we can say medicine co

14、mbines biology and chemistry. What about biochemistry and geophysics?S3: I think biochemistry combines biology and chemistry.S4: Geophysics combines geology and physics.T: What about astronomy?S5: Physics.S6: Mathematics.T: Very good. We should know that astronomy is a multidisciplinary subject and

15、if we want to do some research on it, we should know many science subjects related to it. Now discuss the second question:What do we mean when we say we are studying a subject scientifically? Or whats the correct attitude towards science? S7: We should be objective, not superstitious.T: Whats the co

16、rrect way to prove a scientific idea?S8: We should design experiments to test it for several times.S9: Then we can analyze the results and draw a conclusion at last.T: Lets sum up the answers. To study a subject scientifically, we must try to be objective. In order to test our idea, we should design

17、 experiments, then analyze the results and draw a conclusion. Now lets talk about the third question.What are the most important skills we need to be real scientists?S10: We should be very careful.S11: Be objective and logical.S12: We should be wise enough to design an experiment and write the repor

18、ts clearly.S13: We should be able to draw conclusions from the experiments and not impose conclusions on the data.T: I think you have done great work. From the discussion we know that its not easy to be a scientist. So you should work harder if you want to be a scientist.Step Pre-readingGet the Ss t

19、o discuss the questions on Page 25 with their partners. Then ask the Ss to tell their stories. Encourage the Ss to tell different stories. If they dont know any, tell them some.T: Now please look at the slide show. And discuss these questions with your partners. Then Ill ask some students to tell us

20、 their stories. Are you clear?Ss: Yes, Sir/Madam.1. Do you know each religion or culture has its own ideas about the beginning of the universe? Please give an example if you know.2. Do you know what a scientific idea is?After the Ss discussion, teacher says the following.T: Now whod like to tell us

21、a story? Volunteer!S1: Let me try. In China, we all know that Pangu separates the sky from the earth.T: Can you describe the story in details?S1: Sorry, I cant remember clearly.T: Who can? Nobody? Now Ill tell you. Look at the screen.Pangu separates the sky from the earth The sky and the earth were

22、at first one blurred entity like an egg. Pangu was born into it. The separation of the sky and the earth took 18,000 years- the Yang which was light and pure rose to become the sky, and the Yin which was heavy and murky sank to form the earth. Between them was Pangu, who went through nine changes ev

23、ery day, his wisdom, greater than that of the sky and his ability greater than that of the earth. Every day the sky rose ten feet higher, the earth became ten feet thicker, and Pangu grew ten feet taller. Another 18,000 years passed, and there was an extremely high sky, an extremely thick earth, and

24、 an extremely tall Pangu. Then came the Three Emperors (the Emperor of the Sky, the Emperor of the Earth, and the Emperor of the Men.) So these numbers came into existence and evolve like this. The number begins with one, becomes established at three, is completed at five, prospers at seven, and end

25、s in nine. So the sky is ninety thousand li from the earth.Other legends about the beginning of universeThe Biblical Account “In the beginning God created the heavens and the earth. The earth was formless and empty, darkness was over the surface of the deep, and the spirit of God was hovering over t

26、he waters. And God said.”Day 1: God spoke and separated light from darkness creating Day and Night Day 2: God spoke and separated the water creating sky and ocean Day 3: God spoke and created dry land Day 4: God spoke and created the sun, moon and stars Day 5: God spoke and created living creatures

27、in the air and sea Day 6: God spoke and created the land animals and man Day 7: God rested and blessed this day calling it Holy Step ReadingRead the passage carefully and analyze its structure. Write down the main idea for each paragraph.Para.1: A widely accepted theory about the formation of the un

28、iversePara 2: The formation of the earthPara.3: The importance of water for lifePara.4: The development of plants and animals on the earthPara.5: The arrival of humans and their impact on the earthReading and answer the questions.1. Why was the earth different from other planets? The water remained.

29、2. Why was life able to develop on the earth but not on other planets? The water stayed on the earth but not on other planets. 3. Why was it necessary for plants to grow before animals? Plants provided oxygen for animals to breathe.4. What problem is caused by human beings? They cause global warming

30、. 5. Why is it wrong in films and stories to show dinosaurs and people together? Because dinosaurs died out long before human beings developed on the earth.6. Why do you think that humans are the cleverest animals on the earth? They are the cleverest animals because they have larger brains than any

31、other creature on the earth so far.7. Why is it wrong in films and stories to show dinosaurs and people together? Because dinosaurs died out long before human beings developed on the earth.8. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no

32、longer be considered a planet. Do you know the name of that planet? Do you know why they removed it? Pluto. Scientists now think it is too small to be called a planet. Analyze how life began on earth.ListeningListen to the tape for the students to follow and have further understanding of the passage.T: Read after the tape, then answer me some questions with your book closed.Pl