【课件】Unit+1Reading+and+Thinking课件-人教版（2019）选择性必修第二册.pptx

Unit1ScienceandScientists ReadingandThinking JohnSnowDefeats“KingCholera”LeadinAreyoufamiliarwiththesesituations?MaskupGetvaccinatedNucleicacidtestsPositivemeasuresaretakentofightagainstCovid-19.LeadinBesidescoronavirus,whatotherkindsofepidemics(流行病流行病)doyouknow?Discussion&CooperationTask：the main idea of each paragraphThe exercises of Activity 2 on worksheet Requirements:take notes down while discussingmark the unsolved problems and be ready to put up questionsJohn Snow Defeats “King Cholera”John Snow Defeats “King Cholera”Read for the main idea(who)(who)Para.1(how)(how)Para.2-3(what)(what)Para.1The truthThe truthPara.4Results and significanceResults and significancePara.5John SnowcholeraWho?A _ doctor who even attended _ when she gave birth.What?He had a desire to _ once and for all.famousdestroy choleraWhat?It used to be one of_ because it causes_.When?_.Where?_.What consequence?Millions of people _.the most feared diseases in the worldsevere diarrhoea,dehydration and even deathIn the early 19th centuryEuropedied from the diseaseQueen Victoria“KingCholera”=_choleradeadly While Reading:Para.1backgroundStagesKey words or sentences1.2.3.4.5.6.7.analyse the resultanalyse the resultask a questionask a questiondraw a conclusiondraw a conclusioncollect datacollect datafind supporting evidencefind supporting evidencethink of a methodthink of a methodfind a problemfind a problemWhile Reading：Para.2&3How?two contradictory theoriesin two particular street the cholera was so severe.find out whymarking on the maphouses number 16,37,38 and 40;20 and 21;8 and 9multiple death near the water pump;some houses had no death.a woman and her daughter had died,the woman liked the water.had it delivered to her houseJohn Snow announced that the pump water carried cholera germs.What caused the outbreak of cholera in London in 1854?The truth was that the water from the Broad Street pump had been infected by waste.Moreover,Snow was later able to show a link between other cases of cholera and the different water companies in London.Some companies sold water from the River Thames that was polluted by raw waste.The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.reveal the truthPara.4 Through Snows tireless efforts,water companies began to sell clean water,and the threat of cholera around the word saw a substantial decrease.However,cholera is still a problem.Each year,millions of people around the world get cholera and many die from it.Fortunately,we now know how to prevent cholera,thanks to the work of John Snow.Moreover,in his use of maps and statistics,Snow transformed the way scientists study diseases.For this reason,Snow is considered the father of modern epidemiology.results and contributionsPara.5Was cholera destroyed completely？What contributions did John Snow make to science？Use your own words to explain JOHN SNOW DEFEATS“KING CHOLERA”.WhoWhatHow Post reading a famous British doctor who even attended to Queen Victoria when she gave birth.had a desire to destroy cholera once and for all.It used to be one of the most feared diseases in the world.It causes severe diarrhoea,dehydration,and even death.Millions of people died from it.At first,two theoriesSnow subscribed to.Snow discovered thatWhen an outbreak of cholera hit London in 1854,markedon a mapThere were multiple deaths near.Snow suspected thatannounced.carried.Accordingly Through this intervention,Further thinking:1.What was the most important tool Snow used to defeat cholera?What common medical tools,e.g.,a microscope,didnt he use?Why?2.How has John Snows work affected our daily lives?1.2.3.4.Maps and statistics While microscopes and other medical tools may be good at recoginzing what the germ is,finding out where the germ comes from and how it spreads is not possible with these tools.readily available clean waterwash hands after they become dirtytransform the way scientists study diseasesThinkingWhat makes John Snow a great scientist?What are the commonqualities do great scientist have in common？responsibleresponsibleknowledgeableknowledgeablebrave/courageousbrave/courageouscommitted/devoted/dedicatedcommitted/devoted/dedicatedcriticalthinkingcriticalthinkingcreativecreativequestioningmindquestioningmindpassionatepassionatecuriouscuriousambitiousambitiousdetermined.determined.Thankyou