选修8unit3reading---ppt.电子教案

1、选修8Unit3Reading-ppt. Learning target： Enable the students to know about : The main idea and the main information. 2.通过略读，猜测文章大意；通过精读，把通过略读，猜测文章大意；通过精读，把 握文章框架结构并理解文章细节信息握文章框架结构并理解文章细节信息 3.学会思考和发挥想象力，激励求知欲和提学会思考和发挥想象力，激励求知欲和提高学习兴趣。高学习兴趣。Discuss in pairs which pictures show inventions and which show d

2、iscoveries. An amphibious carStephensons “Rocket”DNA What are the important inventions of the 20th century? Which do you think is the most important one? Thomas Edison invented the electric bulb.Did Edison invent electricity? Can electricity be invented? Is electricity an invention or discovery? Why

3、? 2. Which of this pictures show inventions? Does any of them show discoveries?伽利略的望远镜伽利略的望远镜牛顿制造的反射望远镜牛顿制造的反射望远镜X射线广泛用于医学领域射线广泛用于医学领域谷腾堡发明的印刷机谷腾堡发明的印刷机英国钟表匠阿克莱特发明的水力纺纱机英国钟表匠阿克莱特发明的水力纺纱机3. In pairs discuss any modern inventions you know. Describe them to your partner and explain how they changed peo

4、ples lives.television 1923 colour television 1940photocopier 1937air conditioner 1902electronic digital computer 1942Atomic bomb 1945Credit cards 1950Penicillin 1928 Do you know the stages every inventor must go through before they can have their invention approved? Inventing is a scientific activit

5、y and so follows similar stages to those used in research. Work out a suitable order.Pre-reading Applying for a patent 2. Finding a problem 3. Doing research 4. Testing the solution 5. Thinking of a creative solution 6. Deciding on the invention ReadingThe problem of the snakessnakesDivide the passa

6、ge into several parts and find out the main idea for each paragraph.Part 1(para.1) the discovery of the problem of the snakesPart 2 (para.2)Doing some research about the habits of snakesPart 3(para.3)Deciding on the solutionPart 4(para.4-6) the attempts to catch the snakesPart 5(para.7-8)the require

7、ments of getting a patentI. Read the text carefully and fill in the blanks.Finding a problemSnakes came near my mothers house now and then and she wanted me to get rid of them without _ them.Doing researchI set out to research the _ of snakes to find the easiest way to trap them.harminghabitsThinkin

8、g of a creative solutionThree possible approaches: removing the snakes_ attracting the snakes into a _ using male or female perfume or food _ the snakes so that they would become sleepy and could be easily caughtI decided to use the _ approach. habitattrapcoolinglast /thirdTesting the solutionThree

9、attempts: putting the frozen bowl over the snakes habitat early in the morning putting the frozen bowl over the snakes habitat _ putting the frozen bowl over the snakes habitat in the evening and carrying a small _ to collect them the next morningThe third attempt was a success.in the eveningnetAppl

10、ying for a_ The patent office makes a search to check that your product really is _ from everyone elses. Patent examiners examine whether your claim is _ or not. Your application for a patent will be published _ months from the date you apply if your claim passes all the tests.patentdifferentvalid18

11、展示题目展示题目展示小组展示小组点评小组点评小组1-2Group8Group43-4Group7Group35-6Group6Group27-8Group5Group1加分点评组Group9，10展示与点评要求：展示与点评要求：1. 展示同学快速到位，书写规范，答案力求简洁、规范。展示同学快速到位，书写规范，答案力求简洁、规范。2.点评同学声音洪亮点评同学声音洪亮,注意补充、拓展。注意补充、拓展。3.非展示同学拿好红笔随时修改自己的答案并及时提出质疑。非展示同学拿好红笔随时修改自己的答案并及时提出质疑。 高效展示与点评高效展示与点评1. How did the writer catch the

12、 snakes? ( ) A. using something the snakes were interested to attract them into a trap. B. taking their habitat to another place. C. placing the snakes at a low temperature for them to sleep and then caught them. D. All the above. CRead the text carefully and choose the best answer.探究案探究案2. The writ

13、er was successful to catch the snakes in _ attempt. the first B. the second A.C. the third D. everyC3. The following are used in the three attempts EXCEPT _. A. perfumeB. a bowlC. jelly D. ice-cubesA4. Why did cooling the snakes make them less active? ( ) Because snakes are warm-blooded animals.B. B

14、ecause snakes like high temperature.C. Because snakes are reptiles and their body temperature depends on the heat around them. C5. Which of the following may get a patent according to the text?A. A computer programme.B. A new animal variety.C. A work of literature.D. A truly novel and useful inventi

15、on.D6. The purpose in writing this text isA. to show us how to trap the snakes but not to kill themB. to tell people how to apply for a patent of the writers new ideaC. to introduce the writers new idea of trapping the snakes and her application for a patentD. to tell the readers how to get a new id

16、ea and make it a patent7. The biggest advantage of the writers new idea is that:A. it makes the snakes move slowlyB. it makes the snakes hardly bite usC. it is easier for us to kill the snakes without hurting ourselvesD. it is easier for us to catch the snakes without killing them8. Which statement

17、is true according to the text?A. The snakes were so sleepy in the second attempt that they couldnt bite the writer at all.B. Your product must be different from everybody elses if you want to receive a patent.C. The writer decided to send her invention to the patent office the moment she succeeded i

18、n catching the snakes.D. If an application for your product proves to be valid, you can get a patent immediately. Whats the writing purpose of the writer? What should we learn from this text?1. Whats the writing purpose of the writer?The writer wants to inform us of the scientific methods to solve p

19、resent problems so that we students can not only broaden the horizons but become more skilled in discovering and considering carefully the problems in daily life. We are also encouraged by the writer to be creative and hardworking as well as thinking independently.2. What should we learn from this t

20、ext?We can learn from the text the way of doing scientific researches and how to apply for a patent. We can also learn that it takes an inventor great determination persistence to achieve his or her ambition and persistence to achieve his or her ambition in life.The mother was upset because a family

21、 of snakes had made their home near the house.1). What was the mother upset about?Read and answer the questions.训练案训练案The writer was happy because it gave her an opportunity to help her mother and invent something to catch the snakes without hurting them at the same time.2). Why was the writer happy to help her mother?3). What are the three creative steps that the writer takes to catch the snakes without hurting them?Step 1: She bought a stainless ice cream maker and froze the bowl. She added ice cubes to the top of the bowl to keep it cold. She placed it over the