必修五unit Great Scientists readingPPT教案

1、会计学1必修五必修五unit Great Scientists reading第1页/共18页A brief introduction of choleraBroad Street第2页/共18页Bacteria / germs of cholera第3页/共18页 It infects peoples intestines(肠道肠道), causing diarrhoea(腹泻腹泻), vomiting(呕吐呕吐) and dehydration(脱水脱水) Many deaths in African countries in 2005and even now5oo deaths in 1

2、0 days in 1854 in London.第4页/共18页Spread from one person to another. So it is an infectious Disease. infect/affect people第5页/共18页Who is John Snow? a famous doctor in London. What happened to them? attended her to ease the birth of her babies.第6页/共18页1. Skimming1). Whats the main idea of the passage?A

3、. John Snow was 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页/共18页Careful Reading:John Snow was an doctor in London who Qu

4、een Victoria as 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页/共18页Careful Reading:1. What were the two theories about the cause of cholera? 2

5、. Which did John 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页/共18页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 d

6、isease?3. What might be the cause?Marked on a mapMany of the deathshad no deaths.It seemed that the water was to blame for cholera.第10页/共18页Many of the deaths were near the water pump in Broad Street.deathPart of Snows Cholera Map第11页/共18页Careful Reading:1. Why did he tell people to remove the handl

7、e from the pump?2. What happened after the handle was removed?So that slowed down第12页/共18页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

8、from Broad StreetWater from the pumpThe polluted water carried the virus.suggested thatbe examinedwere instructed not to exposeto第13页/共18页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 scientif

9、ic idea:Dicussing第14页/共18页第15页/共18页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 liv

10、ed and he found that many 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.doctor19thcausedefeatbrokemarkedpumpsourceexamineddealing (in 5 minutes)第16页/共18页What should we pay attention to in our daily life in order not to get infected with cholera? Heal the food left overnightCook raw fo