Unit 1 Science and Scientists Reading and Thinking (ppt课件) (2)-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Learning objectivesIn this class,you will1.get information about how John Snow defeated cholera;2.summarize the stages of scientific research;3.talk about the significance and contribution of Johns work.choleraseverediarrhoeadehydrationfrustratedonce and for allcontradictoryinfectioninfectgermn.霍乱霍乱

2、adj.极为恶劣的；十分严重的；极为恶劣的；十分严重的；严厉的严厉的n.腹泻腹泻n.脱水脱水adj.懊恼的；沮丧的；失意的懊恼的；沮丧的；失意的最终地；彻底地最终地；彻底地adj.相互相互矛盾的；对立的；不矛盾的；对立的；不一致的一致的n.感染；感染；传染传染vt.使感染；传染使感染；传染n.微生物；细菌；病菌微生物；细菌；病菌subscribesubscribe toproofmultiplepumpwater pumphouseholdsuspectblamehandlevi.vi.认购认购(股份股份););定期订购定期订购;定期定期交纳交纳(会费会费)同意；赞同同意；赞同n.n.证据；证

3、明；检验证据；证明；检验adj.adj.数量多的；多种多样的数量多的；多种多样的n.n.泵；抽水机；打气筒泵；抽水机；打气筒水泵水泵n.n.一家人一家人;家庭家庭;v vt t.&v.&vi i.怀疑；疑有；不信任怀疑；疑有；不信任n.n.犯罪嫌疑人；可疑对象犯罪嫌疑人；可疑对象vt.vt.把把归咎于；责怪；指责归咎于；责怪；指责n.n.责备；指责责备；指责n.n.把手；拉手；柄把手；拉手；柄 vt.vt.处理；搬动；操纵处理；搬动；操纵(车辆、动车辆、动物、工具等物、工具等)interventionlinkrawpuresubstantialdecreasethanks ton.介入；出面；

4、干涉介入；出面；干涉n.联系；纽带联系；纽带 vt.把把连接起来；连接起来；相关联相关联adj.未煮的未煮的;生的生的;未经处理的未经处理的;adj.干净的；纯的；纯粹的干净的；纯的；纯粹的adj.大量的；价值巨大的；重大的大量的；价值巨大的；重大的n.减少；降低；减少量减少；降低；减少量 vt.&vi.(使大小、数量等使大小、数量等)减少；降低减少；降低幸亏；由于幸亏；由于Unit 1 Reading and ThinkingUnderstand the questioning mindStep 1.Lead-in Name some famous scientists you know a

5、nd tell something about them.ArchimedesCharles DarwinTu YouyouGregor MendelMarie CurieThomas Edison Zhang HengZhong Nansha What disease can you think of when you look at these pictures?COVID-19 Besides coronavirus,what other kinds of epidemics（流行病）（流行病）do you know?Bird-flu malaria plague（鼠疫）（鼠疫）Ebol

6、a Smallpox（天花）（天花）CholeraWatch a video about John Snow and the Cholera.Read and finish the tasks as quickly as possible.John Snow Defeats“King Cholera”板书Activity 1:Read the title and predict.First readingActivity 2:Read the passage and check your predictions.1.Who is John Snow?He is a British doctor

7、.2.What is King Cholera?It used to be one of the most feared diseases in the world and millions of people died from it in the early 19th century.First readingActivity 2:Read the passage and check your predictions.3.What did John Snow do about King Cholera?He conducted research and found out how chol

8、era spread.Whats the main idea of the passage?A.How John Snow found the cause of cholera and defeated it.B.The cause of cholera was polluted water.C.The source of all drinking water should be examined.D.John Snow was a well-known doctor in London.Step 3.While-readingJohn Snow desired to destroy chol

9、era.John Snow decided to prove the second theory.Snows contributionsActivity 3:Read the passage again and find the main information of each paragraph.Snow began his study by marking on the map and the process.Truth of the infection of cholera.Activity 4:Try to put the following stages of scientific

10、research in order.What order would you put them in?_ analyse the results _ ask a question _ draw a conclusion_ collect data_ find a problem _ find supporting evidence_ think of a method1st stage:Find a problem Read paragraphs 2 and 3 and circle the key words to put the stages in order.Para.2:In gene

11、ral He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days.He was determined to find out why.2nd stage:Ask a questionPara.2:In general,doctors in those days had two contradictory theories to explain how cholera spread.One theory was

12、 that bad air caused the disease.Another was that cholera was caused by an infection from germs in food or water.Snow subscribed to the second theory.3rd stage:Think of a methodPara.3:Snow began by marking on a map the exact places where all those who died had lived.There were multiple deaths near t

13、he water pump in Broad Street(especially house numbers 16,37,38,and 40).4th stage:Collect dataPara.3:Snow began by marking on a map There were multiple deaths near the water pump in Broad Street(especially house numbers 16,37,38,and 40).However,some households(such as 20 and 21 Broad Street,and 8 an

14、d 9 Cambridge Street)had had no deaths.5th stage:Analyse the resultsPara.3:Snow began by marking on a map There were multiple deaths near the water pump in Broad Street(especially house numbers 16,37,38,and 40).However,some households(such as 20 and 21 Broad Street,and 8 and 9 Cambridge Street)had h

15、ad no deaths.6th stage:Find supporting evidencePara.3:Snow began by marking on a map Whats more,in another part of London,a woman and her daughter had died of cholera after moving away from Broad Street.It seemed that the woman liked the water from the pump so much that she had it delivered to her h

16、ouse every day.7th stage:Draw a conclusionPara.3:Snow began by marking on a map As a result of this evidence,John Snow was able to announce that the pump water carried cholera germs.Accordingly,he had the handle of the pump removed so that it could not be used.Through this intervention,the disease w

17、as stopped in its tracks.SummaryThe stages of scientific researchThe 1st stage:find a problemThe 2nd stage:ask a questionThe 3rd stage:think of a methodThe 4th stage:collect dataThe 5th stage:analyse the resultsThe 6th stage:find supporting evidenceThe 7th stage:draw a conclusion2.Read the 1st parag

18、raph quickly and fill in the mind map.CholeraWhat?Its one of _in the world,because it causes _.When?_Where?_What results?_the most feared diseasessevere diarrhoea,dehydration and even death.In the early 19th centuryEuropeMillions of people died from the diseaseRead para.1 and fill in the blanks belo

19、w.John SnowWho?A _ doctor who even attended to _ when she gave birth.What?He had a desire to _ once and for all.young British Queen Victoria destroy choleraRead the passage again and complete the chart below.It was believed that cholera was caused by bad _ or germs in _.Snow _ _ the places where the

20、 people who _ had lived.Many deaths occurred near the _ in Broad Street.Some people _ drunk the water from the pump,and lived.A woman and her daughter died in another part of London after _ _.The pump water carried _.The _ of the pump was removed.airfood or watermarked on diedwater pumphadntdrinking

21、cholera germshandleA.C.B.D.E.water from the pumpa mapA:It was believed that cholera was caused by bad _ or germs in _.B:Snow _ the places where the people who _ had lived C:Many deaths occurred near the _ in Broad Street.Some people _ drunk the water from the pump,and lived.A woman and her daughter

22、died in another part of London after _.D:The pump water carried _.E:The _ of the pump was removed.1.conclusion 2.evidence 3.process 4.solution 5.theories _ _ _ _ _airfood or watermarked ona mapdiedwater pumphadntdrinking water from the pumpcholera germshandleDCBEAconclusionsolutiontheoriesMatch the

23、following headers with the letters from the chart above.Write A-E in the blanks.processevidenceMany deaths happened here.No death happened here.The pump water carried cholera germsPublic houseClue:free beer from public houseJohn Snows Cholera Map1.Which of the following played a very important role

24、in defeating cholera?A.The map.B.The handle.C.The beer.D.The water.2.Which of the following words can best describe John Snow?A.Clever and friendly.B.Talented and popular.C.Determined and helpful.D.Creative and enthusiastic.1.Q:What _?A:Snow thought that cholera was caused by germs in food or water.

25、2.Q:Why _ _?A:Snow had the handle from the pump removed so that it could not be used.3.Q:How _?A:The cholera threat was defeated thanks to the work of John Snow.Task 5What questions would you ask to get the following answers?P3 5did Snow think cholera was caused did Snow have the handle from the pum

26、p removedwas the cholera threat defeatedTask 6Read the passage again and answer these questions.2.Do you think John Snow would have solved this problem without the map?Give a reason.No.The map helped John Snow organise his ideas.He was able to identify those households that had had many deaths and t

27、hose had had no deaths and check their water-drinking habits.The evidence clearly pointed to the polluted water being the cause.analysing,mindmap,summary,retellingFind a problem Ask a questionThink of a methodFind supporting evidenceDraw a conclusionCollect dataAnalyse the results To prove a new scientific idea,seven stages are needed.Analyse the passage according to the seven stages.What spirits can we learn from a scientist like John Snow?creativestrictpatientdetermined positivehard-workingconfidentambitious