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1、Unit 1 SCIENCE AND SCIENTISTS Reading and ThinkingJohn Snow Dffeats“King Cholera”杨婷婷LearningobjectivesLearningobjectivesAt the end of this lesson,Ill be able to:get information about how John Snow defeated cholera;summarize the stages of scientific research;talk about the significance and contributi
2、on of Johns work.ContentsWarming up01020304Pre-readingWhile-readingPost-reading05HomeworkWarming upPART 01OpeningpageOpeningpageWhat can you see in the photo?two girlsTwo girls are conducting an experiment in a school science laboratory,probably to test a theory,verify results,collect data,or develo
3、p skills needed in scientific research.conducting an experimentOpeningpageOpeningpageTo raise new questions,new possibilities,to regard old problems from a new angle,requires creative imagination and marks real advance in science.Albert Einstein and Leopold Infeld 提出新问题，发现新问题，从新的角度审视已存在的问题，这些需要创造性的想
4、象力，并标志着科学的真正进步。What qualities do Einstein and Infeld think a scientist should have?To solve a scientific problem,one not only requires some degree of technical skill but also needs the ability to ask questions and to see things in a new way.Other qualities:hardworking,patient,passionate,enthusiastic
5、,devoted.Pre-readingPART 02DescribethepicturesDescribethepicturesAre you familiar with these situation?Nucleic Acid TestGet vaccinatedMask upPositive measures are taken to fight against Covid19.DiscussionDiscussionWhat other kinds of epidemics do you know?plague/ple/influenza/nfluenz/choleraPredicti
6、onPredictionJOHN SNOW DEFEATS“KING CHOLERA”What do you think the passage is mainly talking about?While-readingPART 03ReadformainideaReadformainideaJOHN SNOW DEFEATS“KING CHOLERA”Whats the main idea of the passage?AJohn Snow was a wellknown doctor in London.BThe cause of cholera was the polluted wate
7、r.C The source of all drinking water supplies should be examined.DHow John Snow found the cause of cholera and defeated it.CholeraCholeraWhat is cholera?What harm does cholera do to people?Why is it called“King Cholera”?CholeraCholeraloss of liquid severe vomiting/vmt/diarrhea/dar/It begins in the s
8、tomach and a severe case can lead to death without immediate treatment.JohnSnowJohnSnowWho is John Snow?A young British who even Queen Victoria when she gave birth.He had a desire to .once and for all.doctorattended todestroy choleratake care of/look afterReadforstruturesReadforstrutures()Paragraph
9、1()Paragraph 2()Paragraph 3()Paragraph 4()Paragraph 5A.Finally“King Cholera”was defeated.BJohn Snow wanted to use his knowledge to solve cholera.CHe got interested in two theories explaining how cholera killed people.DHe needed to prove the second theory was correct.EHe finally found out that dirty
10、water was the cause of cholera.ABCDEWho&WhatHow to defeatTruthAchievementsReadfororderReadfororder analyze the results ask a question draw a conclusion collect data find a problem find supporting evidence think of a methodHow did John Snow defeat“King Cholera”?How:Research StepsStep 1 It was believe
11、d cholera was caused by or germs in _.How:Research StepsStep 1It was believed cholera was caused by or germs in _.bad airfood or waterfind a problemStep 2Snow was determined to find out .How:Research StepsStep 1It was believed cholera was caused by or germs in _.food or waterfind a problemStep 2Snow
12、 was determined to find out .why the outbreak was so severe in two particular streets ask a questionStep 3Snow the places where the people who had lived.marked on a mapdiedthink of a method(Para.3)What kind of map is it?Its Snows cholera map.What does“”mean?It means one death.What does“PH”mean?It me
13、ans public house,a house such as bar or pub where alcoholic drinks are sold to the public.What does 30,31,.refer to?They refer to numbers of houses.Step 4 The number of deaths in different households was recorded.collect dataBROAD STREETBROAD STREETWhich house numbers had more than four deaths in Br
14、oad Street?House number 16,37,38 and 40 had more than four deaths in Broad Street.Which house numbers had no deaths in Broad Street?House number 14,20,21,25,27,28 and 34 had no deaths in Broad Street.Where is the pump?The pump is near house number 40 in Broad Street.Step 5 Multiple deaths occurred n
15、ear the in Broad Street,while some people who _ drunk the water from the pump,lived.analyze the resultspumphadntStep 6find supporting evidenceStep 7draw a conclusionWhat is the result of John Snows research?The pump water carried cholera germs,the handle of the pump was removed,and the disease was s
16、topped in its tracks.(Para.3)Check your order analyze the results ask a question draw a conclusion collect data find a problem find supporting evidence think of a method6543217OrderOrderairfood or watermarked on a mapdiedwater pumphadnt drinking water from the pumpcholera germshandleCompletetheblank
17、CompletetheblankMatchMatchairfood or watermarked on a mapdiedwater pumphadnt drinking water from the pumpcholera germshandleMatch the following headers with the letters(AE)from the chart below.1 conclusion .2 evidence .3 process .4 solution .5 theories .AEBCDWhat contributions did John Snow make to
18、science?The cholera was caused by the water which came from the River Thames and had been infected by waste.(Para.4)(Para.5)What caused the outbreak of cholera in London in 1854?CriticalreadingCriticalreadingPost-readingPART 04FurtherthinkingFurtherthinkingWhat qualities are crucial in Snows achieve
19、ments?qualitiesskilled/professionalpersistentpatientdeterminedrigorous(一丝不苟的)innovative.a questioning mindWriteoutthequestionsWriteoutthequestionsQ:What did Snow tbink cholera was caused by?Q:Why did Snow have the handle of the pump removed?Q:How was the cholera threat defeated?A:Snow thought that c
20、holera was caused by germs in food or water.A:Snow had the handle of the pump removed so that it could not be used.A:The cholera was defeated thanks to the work of John Snow.HomeworkPART 05HomeworkHomeworkWhy was it John Snow,not other doctors,who defeated King Cholera?Write about your opinion by using the information from the passage.THANK YOU