高一英语 Unit16《Scientists at work第二课时》精品教案 旧人教版第一册

1、The Second PeriodTeaching Aims:1.Learn and master the following:Words:conduct,charge,shock,prove,work,tear,fasten,explain,appearPhrases:do an experiment,a great deal of,tieto stopfromSentence Pattern:Having realised that I could use,I decided to do an2.Read the passage and learn how the scientist Fr

2、anklin found lightning and electricity are the same.3.Improve the students' reading ability through reading activities.Teaching Important Points:1.Learn the words and phrases listed above.2.Train the students to improve their reading comprehension.Teaching Difficult Points:1.Understand the follo

3、wing sentences correctly:(1)Having realised that I could use a kite to attract lightning,I decided to do an experiment.(2)Fly the kite when a thunderstorm appears to be coming on.2.How to help the students understand the passage better.Teaching Methods:1.Question-and-answer method to make students i

4、nterested in what they will learn.2.Fast reading to get the general idea of the text.3.Careful reading to answer some detailed questions.4.Individual,pair or group work to make every student work in class.Teaching Aids:1.a tape recorder2.a projector and a computer for multimedia useTeaching Procedur

5、es:Step .GreetingsGreet the whole class as usual.Step .RevisionT:In the last period,we talked about advantages and disadvantages of some discoveries.And I asked you to make up a dialogue with the information of one discovery.Now I'll ask two students to act out the dialogue in front of the class

6、.Any volunteers?S1:S2Step .DiscussionT:(Show a picture of a telephone on the screen.)Please look at the picture on the screen.What's it?Ss:It's a telephone set.T:Do you know who invented the telephone?S3:Yes,I know.It was Alexander Bell who invented the telephone.T:You are right.Bell was a g

7、reat inventor in America.In 1876,he invented the telephone.After 4 years,he invented photophone again.There are many famous scientists like him all over the world.They made many important inventions in many fields.Do you know the names of some famous scientists?What are they famous for?Any volunteer

8、s?S1:Edison.He was a great inventor.He invented the electric bulb,the phonograph and many other things.S2:Calilean.He made on astronomical telescope and first began to do a scientific experiment.S3:Harvey.He was a founder of experimental bionomy in modern times.S4:Einstein.He was famous for his theo

9、ry of relativity.S5:T:Yes.You are right.In the eighteenth and nineteenth centuries,scientists all over the world also made many important discoveries in many different fields,such as in physics,medicine,chemistry and biology.Can you name some of them?Why are their discoveries important?Now please di

10、scuss the questions in groups of four and write down your answers on a piece of paper,then I'll check the answers.(Teacher gives them some minutes to discuss and then collects the students' idea.)Suggested answers:S6:Newtons.He was the famous physicist and mathematician in the history of sci

11、ence.Also he made a telescope.He found the law of universal gravitation and Newton Law.Without Newton Law there wouldn't be modern physics.S7:Marie Curie.She was an extraordinary woman scientist.She found radium and uranium.She made a great contribution in physics.If there were no radium and no

12、uranium,we couldn't take x-ray photos,which are very helpful to modern medicine.S8:Darwin.He was the founder of the theory of evolution.His theory makes us know the origin of human and the development of human better.His theory is very important to the development of biology.S9:Nobel.He was the

13、inventor of the detonator and set up“Nobel Prize”.His invention made it safer for humans to use explosive.His Nobel prize encourages more people to make more contributions to the world.S10:Step .Pre-readingT:Well done.You have known much about some famous scientists and their important discoveries.D

14、o you know something about Franklin?S11:Yes.Franklin was a Northern American scientist and discovered the secret of lightning.T:Very good.How did he discover the secret?He did it through a famous kite experiment.Today we'll read a passage to know about his experiment.Before reading it,we'll

15、learn the new words first.Please look at the screen.Let's read the words together.(Teacher shows the new words on the screen.)New words:conduct vt.引导；管理；指挥n.行为；操行conductor n.charge vt.充电prove vt.证明；证实tear vt.(tore,torn)撕扯；撕裂；撕毁fasten vt.扎牢；拴紧；使固定explain vt.解释；说明explanation n.shock vt.打击；震动thunde

16、rstorm n.雷暴condenser n.冷凝器；电容器string n.线；细绳handkerchief n.手帕frame n.结构；框架foot n.英尺；脚feetl (pl.)n.ribbon n.缎带；丝带electric adj.电的electricity n.sharp adj.锐利的；锋利的(Teacher corrects the students' mistakes in pronunciation,gives simple explanation and gets the students to have enough time to remember th

17、e new words.)Step .ReadingT:Now open your books on Page 18.Read the passage quickly and answer the two questions on the screen.(Teacher shows the questions on the screen.)1.Was the experiment done in June 1752 successful?2.What did this experiment prove?(Teacher gives students a few minutes to read

18、the passage and then check the answers.)T:Have you finished reading?(Ss:Yes.)Who knows the answer to the first question?S11:Yes,the experiment was successful.T:Who'd like to answer the second question?S12:This experiment proved that lighting and electricity were the same.T:OK.Now read the passag

19、e carefully.After a while,I'll give you some sentences on the screen.Read them and tell us if they are true or false.(After a few minutes,teacher shows the sentences on the screen and corrects the students' answers.)1.In 1752,scientists already know what electricity is.2.Franklin was helped

20、by a friend to do the experiment.3.Franklin made the kite of silk because wet silk doesn't conduct electricity.4.A condenser was used in the experiment to store electricity.5.The key tied to the string was put into the door to stop the kite from flying away.Suggested answers:True:1、4False:2、3、5T

21、:Your answers are right.Now look at the pictures on Page 19 in your books.The pictures show how Franklin did his experiment.Please pick out the correct ones.If you have any difficulty,you may discuss them in pairs.(Two minutes later,teacher asks students to give the answers.)S13:I think Picture 2、3、

22、4 are correct.S14:I think Picture 2 is wrong.After Franklin and his son flied the kite,they stood inside a door or under some cover so that the silk ribbon does not get wet.T:Student 14 is right.The correct pictures are Picture 3 and 4.Step .Language StudyT:We have known the general meaning of the p

23、assage.In the text there are some sentences we should master.And there are some words and expressions we should learn to use.Let's look at their usages on the screen.1.do/carry out/make/perform an experimente.g.They did an experiment on the monkey to test the new drug.2.a great deal of +(u.)n.A

24、great deal of money has been spent on the new ve+n./pron./thatprove sb./sth. (to be)+n./adj.It is proved thate.g.Who can prove it?The facts prove that he is right.=He proves(to be)right.=It is proved that he is right.She proved a very strict teacher.4.charge vt.The cell phone is being

25、charged.5.cross n./vt.He marked the wrongly spelt word with a cross.He crossed the river.6.appear vi.=seemIt appears/appeared thatappear+adj.e.g.It appears that I am wrongI appear(to be)wrong.He appears to be talking to himself.John appeared to have known that.7.tietoPlease tie the horse to the tree

26、.8.stop sb.(from)doing sth.What can stop us from doing so if we want to?9.work vi.The drug will not work.I think your suggestion will work.10.Having done,主+vNot having received his letter,I decided to write one again.T:(Teacher gives some explanations to those on the screen.)In the last sentence,the

27、 Perfect Present Participle is used because“receive”happened before“decide”.(Write some important words,phrases on the blackboard.)Step .Listening and ConsolidationT:Now look at your books.I'll play the tape.You can follow it in a low voice.Do pay attention to your pronunciation and intonation.(

28、After that,teacher gives students a few minutes to read the text aloud.)T:So much for reading the text.Now look at the three questions behind the text.Discuss them in groups of four.After a while,I'll ask some of you to talk about your ideas.(Students begin to discuss and then teacher collects the ideas.)Suggested answers:1.Because the kite could fly high enough to get close to the thunderstorm so that he could do his experiment.2.Because the kite made of paper isn't strong enough,while a kite made of silk will