【课件】Unit 1 Science and Scientists Reading and Thinking 课件-2022-2023学年高中英语人教版（2019）选择性必修第二册.pptx

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1、Unit 1Unit 1Unit 1Unit 1Unit 1SCIENCE AND SCIENTISTSSCIENCE AND SCIENTISTSSCIENCE AND SCIENTISTSSCIENCE AND SCIENTISTSLearningobjectivesIn 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 contrib

2、ution of Johns work.choleraseverediarrhoeadehydrationfrustratedonceandforallcontradictoryinfectioninfectgermn.霍乱霍乱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subscribesubscribetop

3、roofmultiplepumpwaterpumphouseholdsuspectblamehandlevi.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

4、手；柄把手；拉手；柄 vt.vt.处理；搬动；操纵处理；搬动；操纵(车辆、动物、车辆、动物、工具等工具等)interventionlinkrawpuresubstantialdecreasethankston.介入；出面；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Un

5、it 1 Reading and ThinkingUnderstand the questioning mindUnderstand the questioning mindStep1.Lead-inNamesomefamousscientistsyouknowandtellsomethingaboutthem.ArchimedesCharlesDarwinTuYouyouGregorMendelMarieCurieThomasEdisonZhangHengZhongNansha What disease can you think of when you look at these pict

6、ures?COVID-19Besidescoronavirus,whatotherkindsofepidemics（流行病）（流行病）doyouknow?Bird-flumalariaplague（鼠疫）（鼠疫）EbolaSmallpox（天花）（天花）CholeraWatchavideoaboutJohnSnowandtheCholera.Readandfinishthetasksasquicklyaspossible.JohnSnowDefeats“KingCholera”板书Activity1:Readthetitleandpredict.First readingActivity2:R

7、eadthepassageandcheckyourpredictions.1.Who is John Snow?He is a British doctor.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 readingActivity2:Readthepassageandcheckyourpredictions.3.What did John

8、Snow do about King Cholera?He conducted research and found out how cholera spread.Whatsthemainideaofthepassage?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 docto

9、r in London.Step3.While-readingJohnSnowdesiredtodestroycholera.JohnSnowdecidedtoprovethesecondtheory.SnowscontributionsPara.1Para.1Para.4Para.4Para.3Para.3Para.2Para.2Activity3:Readthepassageagainandfindthemaininformationofeachparagraph.Para.5Para.5Snowbeganhisstudybymarkingonthemapandtheprocess.Tru

10、thoftheinfectionofcholera.Activity4:Trytoputthefollowingstagesofscientificresearchinorder.Whatorderwouldyouputthemin?_analysetheresults_askaquestion_drawaconclusion_collectdata_findaproblem_findsupportingevidence_thinkofamethod1ststage:FindaproblemReadparagraphs2and3andcirclethekeywordstoputthestage

11、sinorder.Para.2:In general 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.2ndstage:AskaquestionPara.2:In general,doctors in those days had two contradictory theories to explain how cholera s

12、pread.One theory was 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.3rdstage:ThinkofamethodPara.3:Snow began by marking on a map the exact places where all those who died had lived.There were multip

13、le deaths near the water pump in Broad Street(especially house numbers 16,37,38,and 40).4thstage:CollectdataPara.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 S

14、treet,and 8 and 9 Cambridge Street)had had no deaths.5thstage:AnalysetheresultsPara.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 S

15、treet)had had no deaths.6thstage:FindsupportingevidencePara.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

16、to her house every day.7thstage:DrawaconclusionPara.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 dise

17、ase was stopped in its tracks.SummaryThestagesofscientificresearchThe 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.Readthe1stparagra

18、phquicklyandfillinthemindmap.CholeraWhat?Itsoneof_intheworld,becauseitcauses_.When?_Where?_Whatresults?_themostfeareddiseasesseverediarrhoea,dehydrationandevendeath.Intheearly19thcenturyEuropeMillionsofpeoplediedfromthediseaseReadpara.1andfillintheblanksbelow.John SnowWho?A_doctorwhoevenattendedto_w

19、henshegavebirth.What?Hehadadesireto_onceandforall.young British Queen Victoria destroy choleraRead the passage again and complete the chart below.Itwasbelievedthatcholerawascausedbybad_orgermsin_.Snow_theplaceswherethepeoplewho_hadlived.Manydeathsoccurrednearthe_inBroadStreet.Somepeople_drunkthewate

20、rfromthepump,andlived.AwomanandherdaughterdiedinanotherpartofLondonafter_.Thepumpwatercarried_.The_ofthepumpwasremoved.airfoodorwatermarkedondiedwaterpumphadntdrinkingcholeragermshandleA.C.B.D.E.waterfromthepumpamapA:It was believed that cholera was caused by bad _ or germs in _.B:Snow _ the places

21、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 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.solu

22、tion 5.theories _ _ _ _ _airfood or watermarked ona mapdiedwater pumphadntdrinking water from the pumpcholera germshandleDCBEAconclusionsolutiontheoriesMatch the following headers with the letters from the chart above.Write A-E in the blanks.processevidence1.Whichofthefollowingplayedaveryimportantro

23、leindefeatingcholera?A.The map.B.The handle.C.The beer.D.The water.2.WhichofthefollowingwordscanbestdescribeJohnSnow?A.Clever and friendly.B.Talented and popular.C.Determined and helpful.D.Creative and enthusiastic.analysing,mindmap,summary,retellingFind a problem Ask a questionThink of a methodFind supporting evidenceDraw a conclusionCollect dataAnalyse the results Toproveanewscientificidea,sevenstagesareneeded.Analysethepassageaccordingtothesevenstages.What spirits can we learn from a scientist like John Snow?creativestrictpatientdeterminedpositivehard-workingconfidentambitious