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1、John Snow defeats “King Cholera”第1頁(yè)/共18頁(yè)A brief introduction of choleraBroad Street第2頁(yè)/共18頁(yè)Bacteria / germs of cholera第3頁(yè)/共18頁(yè) It infects peoples intestines(腸道), causing diarrhoea(腹瀉), vomiting(嘔吐) and dehydration(脫水) Many deaths in African countries in 2005and even now5oo deaths in 10 days in 1854

2、in London.第4頁(yè)/共18頁(yè)Spread from one person to another. So it is an infectious Disease. infect/affect people第5頁(yè)/共18頁(yè)Who is John Snow? a famous doctor in London. What happened to them? attended her to ease the birth of her babies.第6頁(yè)/共18頁(yè)1. Skimming1). Whats the main idea of the passage?A. John Snow was

3、 a well-known doctor in London.B. The cause of Cholera was polluted water.C. The source of all drinking water should be examined.D. How John Snow collected, analyzed data and found the cause of the disease and solved it .第7頁(yè)/共18頁(yè)Careful Reading:John Snow was an doctor in London who Queen Victoria as

4、 her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem. expertattendedphysicianexposedcurechallenge第8頁(yè)/共18頁(yè)Careful Reading:1.What were the two theories about the cause of cholera? 2.Which did John

5、Snow want to prove?3.What was his method of doing the research?multiplied victimsabsorb The second one.To gather information in two particular streets.第9頁(yè)/共18頁(yè)Careful Reading:1.What did he do with the results of his enquiry?2.What valuable clue did he get about the cause of the disease?3.What might

6、be the cause?Marked on a mapMany of the deathshad no deaths.It seemed that the water was to blame for cholera.第10頁(yè)/共18頁(yè)Many of the deaths were near the water pump in Broad Street.deathPart of Snows Cholera Map第11頁(yè)/共18頁(yè)Careful Reading:1.Why did he tell people to remove the handle from the pump?2.What

7、 happened after the handle was removed?So that slowed down第12頁(yè)/共18頁(yè)Careful Reading:1.Where did the woman live and what did she had delivered to her house every day?2.What did their deaths suggest?3.What measures did John Snow take to prevent the disease from spreading?Away from Broad StreetWater fro

8、m the pumpThe polluted water carried the virus.suggested thatbe examinedwere instructed not to exposeto第13頁(yè)/共18頁(yè)draw a conclusion Think of a method Collect results Make a questionFind a problem Analyse the results Find supporting evidenceStages in setting out a new scientific idea:Dicussing第14頁(yè)/共18頁(yè)

9、第15頁(yè)/共18頁(yè)Read the passage again and fill in the blanks:John Snow was a well-known _ in London in the _ century. He wanted to find the _ of cholera in order to _ it. In 1854 when a cholera _ out, he began to gather information. He _ on a map where all the dead people had lived and he found that many

10、people who had drunk the dirty water from the _ died. So he decided that the polluted water carried cholera. He suggested that the _ of all water supply be _ and new methods of _ with polluted water be found. Finally, “King Cholera” was defeated.doctor19thcausedefeatbrokemarkedpumpsourceexamineddeal

11、ing (in 5 minutes)第16頁(yè)/共18頁(yè)What should we pay attention to in our daily life in order not to get infected with cholera? Heal the food left overnightCook raw food thoroughlyWash hands oftenKeep away from flieschoose fresh sea foodKeep the kitchen cleanDispose rubbish properly.Drink boiled water第17頁(yè)/共18頁(yè)感謝您的觀看。第18頁(yè)/共18頁(yè)