1、Unit 1John Snow Defeats“King Cholera”Reading and ThinkingLead-indiarrhoeaDehydrationDeathLead-inu If you were a doctor,what would you do to stop the spread of cholera？Before-readingu Stages of scientific research Think of a methodCollect dataAsk a questionFind a problemAnalyse the resultsFind suppor
2、ting evidenceDraw a conclusionFind a problemAsk a questionThink of a methodCollect dataAnalyse the resultsFind supporting evidenceDraw a conclusionJohn Snow Defeats“King Cholera”Prediction Who was John Snow?What was“King Cholera”?How did John Snow fight against cholera?Skim to check your prediction(
3、3mins)JohnSnowCholeraWho?What?A _doctor who even attend _when she gave birth.He had desire to _once and for all.Why is it called the king cholera?famousQueen Victoriadestroy choleraCholera used to be one of the most feared disease in the world.In the early 19th century,when an outbreak of cholera hi
4、t Europe,millions of people died from the disease.Para.1Cholera was caused by bad air.Cholera was caused by an infection from germs in food or water.Para.2Para.2(two contradictory theories about how cholera spread)defeat ORDER STAGE 1 find a problem 2 ask a question 3 think of a method 4 collect dat
5、a 5 analyse the results6 find supporting evidence 7Draw a conclusionHow does Snows questioning mind work in defeating“King Cholera”?(Ex.3&4)It was believed that cholera was caused by bad _ or germs in_.ASnow _ the places where the people who _ had lived.BMany deaths occurred near the _in Broad Stree
6、t.CSome 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 _DThe _ of the pump was removed.Etheoriesprocessevidenceconclusionsolutionairfood or waterdiedinvestigatedwater pumphadntdrinking the pump watercholera germsh
7、andlePara.3What helps John Snow most in defeating cholera?Detailed reading A.His experience B.His map How does it work?epidemiological dot map流行病学标点地图 beerwater pumppubPara 3Collect resultsNote:1death PH:public house 30,31,:numbers of housesWhat link did John Snow find between the deaths and drinkin
8、g water.Detailed reading of para.4The water fromhad beenThe polluted water fromThe people whoThe water infected by wasteThe polluted water sold to or drank by peopleThe people infected by choleraSnow prove on of the two contradictory theories by Detailed readingl making an immediate _(investigate)l
9、marking on an _(epidemiology)mapl analysing the _ between deaths and drinking water.l announcing the result with _(fact)evidence.investigationepidemiologicallinkfactualExercise 5Write out the questions according to the answers.1 Q:_?_?A:Snow thought that cholera was caused by germs in food or water.
10、2 Q:_?A:Snow had the handle of the pump removed so that it could not be used.3 Q:_?A:The cholera threat was defeated thanks to the work of John Snow.Ask questionsOne way to approach a reading passage is to ask questions about it.Asking questions can help you understand the content.It can also help y
11、ou think more deeply about topic.What theory was Snow subscribe toHow did Snow think cholera was causedWhy did Snow have the handle of the pump removedHow was the cholera threat defeatedDetailed reading of para.5Para.5Contribution&achievement of John SnowHow has John Snows work affected our daily li
12、fe?Why is John Snow considered the father of modern epidemiology（传染病学）?Thanks to John Snows work,we know how to prevent cholera.With Snows work,the world saw a substantial decrease of the threat of cholera,and he transformed the way scientists study diseases.What good qualities do you think John Sno
13、w have?What other qualities do you think scientists need?DiscussionbraveryqualitiesdevotionLogical thinkingexpertcarefulnesspersistencecreationTo raise new questions,new possibilities,to regard old problems from a new angle requires creative imagination and mark real advance in science.Albert Einstein&Leopold InfeldHomework1.Write a passage of the importance of science and scientific research.2.Retell the story without referring to the textbook.
