1、Unit 1 Science and scientistsUnit 1 Science and scientistsJohn Snow Defeats King Cholera授课人：John Snow and the Cholera Outbreak of 1854Reading for predictionReadingReadingJohn Snow Defeats“King Cholera”According to the title,the story is going to tell us information about.who is John Snow?what is cho
2、lera?how to defeat?John Snow“King Cholera”DefeatsReading for informationa British doctorIn time,he rose to become a famous doctor and even attended to Queen Victoria when she gave birth.expert/experienced/knowledgeableThe father of modern epidemiologyReadingReadingReading for informationIt used to b
3、e one of the most feared diseases in the world.cause severe diarrhoea,dehydration,and even death.no one knows how to prevent or treat choleraIt is still a problem.Fortunately,we know how to prevent it.deadlyuncontrollable“King”ReadingReadingstages of scientific researchanalyse the resultsask a quest
4、iondraw a conclusioncollect datafind a problemfind supporting evidencethink of a methodOrder?PairworkPairworkReadingReadingCholera used to be one of the most feared diseases in the world,until aBritish doctor,John Snow,showed how it could be overcome.Thisillness causes severe diarrhoea,dehydration,a
5、nd even death.In theearly 19th century,when an outbreak of cholera hit Europe,millionsof people died from the disease.As a young doctor,John Snowbecame frustrated because no one knew how to prevent or treat cholera.In time,he rose to become a famous Doctor,and even attended toQueen Victoria when she
6、 gave birth.However,he never lost his desire.Reading for informationPara1:Find a problemProblemCholera was a deadly disease and people had no idea about its cause or its cure.In general,doctors in those days had two contradictory theories to explain how cholera spread.One theory was that bad air cau
7、sed the disease.The other was thatcholera was caused by an infection from germs in food or water.Snow subscribed tothe second theory.It was correct,but he still needed proof.Consequently,when an outbreak of cholera hit London in 1854,Snow began to investigate.He discovered that in two particular str
8、eets the cholera outbreak was so severe that more than 500 people died in ten days.He was determined to find out why.Reading for informationPara2:Ask a questionQuestionHow did cholera kill people/How did it spread?Snow began by marking on a map the exact places where all those who died had lived.The
9、re 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 Cambridge8 Street)had had no deaths.These people worked in the pub at 7 Cambridge Street.They had been given free beer,and so had n
10、ot drunk the water from the pump.Snow suspected that the water pump was to blame.What is 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 hou
11、se every day.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 was stopped in its tracks.Reading for informationPara 3:Think of a m
12、ethod&Collect databeer pubwater pumpPara 437403816Multiple deaths happened here.No death happened here.It seemed that the water from the pump was to blame.Analyze the resultSnow began by marking on a map the exact places where all those who died had lived.There were multiple deaths near the water pu
13、mp 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 Cambridge8 Street)had had no deaths.These people worked in the pub at 7 Cambridge Street.They had been given free beer,and so had not drunk the water from the pump.Snow sus
14、pected that the water pump was to blame.What is 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 house every day.As a result of this evidence
15、,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 was stopped in its tracks.Reading for informationPara 3:Think of a method&Collect dataAnalyze the result of c
16、ollected dataSnow began by marking on a map the exact places where all those who died had lived.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 Cambridge8 Street)had had no dea
17、ths.These people worked in the pub at 7 Cambridge Street.They had been given free beer,and so had not drunk the water from the pump.Snow suspected that the water pump was to blame.What is more,in another part of London,a woman and her daughter had died of cholera after moving away from Broad Street.
18、It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day.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
19、 this intervention,the disease was stopped in its tracks.Reading for informationPara 3:Think of a method&Collect dataFind supporting evidenceAnalyze the result of collected dataDraw a conclusionReading for thinkingAfter the remove of the handle,the spread of cholera in this area was stopped.How abou
20、t other cases in London?The government might ask all the water companies to provide clean water.What measures might they take?People might be educated not to drink raw water but pure or boiled water.not purifiedlarge in degreestages of scientific research7.draw a conclusion6.find supporting evidence
21、 5.analyze the results4.collect data3.think of a method2.ask a question1.find a problemReadingReadingReading for thinkingWhat made John Snow succeed in preventing “King cholera”?(try to find supporting details from the text)1.2.3.4.GroupworkGroupworkReading for thinkingexpertAs a young doctor,John S
22、now became frustrated.In time,he rose to become a famous doctor.determinedHe never lost his desire to cholera once and for all.careful/rigorous(严谨的)curious/questioning mindHe suspected.He was able to announce.He discovered that in two particular streets.find out whycreativeReading for thinkingscient
23、ific spiritsscientific methodsscientific success The scientist is not a person who gives the right answers but the one who asks the right questions.Science is a way of thinking much more than it is a body of knowledge.The science of today is the technology of tomorrow.Your stage,Your challenge.华为“天才少年”彭志辉独造神奇机器臂，远程操控缝合葡萄皮Homework1.Decide on one scientist that you admire most2.Find out one of his most important achievements3.Write down the story Youd better give it a title.If possible,attatch some pictures.Father of hybrid rice
