1、Unit 1 Great scientistsReading高二人教新课标版必修五高二人教新课标版必修五1 Do you know how to prove a new 1 Do you know how to prove a new idea in scientific research?Discuss in idea in scientific research?Discuss in small groups the stages in setting out small groups the stages in setting out a new scientific idea.What
2、 order a new scientific idea.What order would you put them in?would you put them in?Pre-readingPre-readingDraw a conclusionDraw a conclusionThink of a methodThink of a methodCollect resultsCollect resultsMake a questionMake a questionFind a problemFind a problemAnalyseAnalyse the results the results
3、Find supporting evidenceFind supporting evidence1 12 23 34 45 56 67 7Find a problemFind a problemMake a questionMake a questionThink of a methodThink of a methodCollect resultsCollect resultsAnalyseAnalyse the results the resultsFind supporting evidenceFind supporting evidenceDraw a conclusionDraw a
4、 conclusionWhat do you know about cholera?What do you know about cholera?It is a kind of terrible disease caused It is a kind of terrible disease caused by drinking dirty water and it caused by drinking dirty water and it caused a lot of deaths in the old times and it a lot of deaths in the old time
5、s and it was very difficult to defeat.was very difficult to defeat.It begins in the stomach and a severe case can lead to death without immediate treatment.And the victims died very quickly from a loss of liquid after severe vomiting(呕吐呕吐)and diarrhoea(腹泻腹泻).Bacteria/germs Bacteria/germs of cholera
6、of choleraJohn Snow defeats“King cholera”John Snow defeats“King cholera”John Snow(1813-1858)was born and worked as a doctor in Great Britain.He was originally an anaesthetist(麻醉师麻醉师).BackgroundBackgroundHe was so famous that he became the He was so famous that he became the doctor for Queen Victoria
7、 at the births doctor for Queen Victoria at the births of her many children.of her many children.Four outbreaks of cholera in the 1830s Four outbreaks of cholera in the 1830s and 1840s killed many people in and 1840s killed many people in England.In 1854,“the most terrible England.In 1854,“the most
8、terrible outbreak of cholera which ever outbreak of cholera which ever occurred in the kingdom”began.It was occurred in the kingdom”began.It was so violent and sudden that 127 people so violent and sudden that 127 people died in the first three days.died in the first three days.Task 1 Fill in this f
9、orm.Task 1 Fill in this form.StepsWhat/How?1.Find a problem2.Make a question3.Think of a method4.Collect results5.Analyze results6.Find supporting evidence7.Draw a conclusionStepsWhat/How?1.Find a problem2.Make a question3.Think of a methodWhat caused cholera?What caused cholera?Which theory is corr
10、ect?Which theory is correct?Collect data on those who Collect data on those who fell ill or died and where fell ill or died and where they lived.they lived.StepsWhat/How?4.Collect results5.Analyze resultsPlot information on a map Plot information on a map to find out where people to find out where p
11、eople died or did not die.died or did not die.Find out where they got Find out where they got the water.Analysethe water.Analyse the the water to see if it is the water to see if it is the cause of the deathscause of the deaths.StepsWhat/How?6.Find supporting evidence7.Draw a conclusionFind other ev
12、idence to Find other evidence to support the analysis.support the analysis.It was certain that polluted It was certain that polluted water carried the disease.water carried the disease.The source of all drinking The source of all drinking water should be examined water should be examined to make sur
13、e it is safe.to make sure it is safe.1.What do you know about Dr.John 1.What do you know about Dr.John Snows being well-known in London?Snows being well-known in London?He attended Queen Victoria as her He attended Queen Victoria as her personal physician.personal physician.Task 2 Answer these quest
14、ionsTask 2 Answer these questions2.From what disease did Londoners2.From what disease did Londoners suffer in his age?suffer in his age?They exposed themselves to cholera.They exposed themselves to cholera.3.Did people know how to cure the 3.Did people know how to cure the disease?disease?4.When did
15、 Dr.Snow think the 4.When did Dr.Snow think the disease would disease would be controlled?be controlled?No.No.He knew the disease would never be He knew the disease would never be controlled until its cause was found.controlled until its cause was found.People absorbed this disease into their People
16、 absorbed this disease into their bodies with their meals.From the bodies with their meals.From the stomach the disease quickly attacked stomach the disease quickly attacked the body and soon the affected person the body and soon the affected person died.died.5.What was the second theory explaining
17、5.What was the second theory explaining how the disease killed people?how the disease killed people?6.How serious was the disease outbreak 6.How serious was the disease outbreak in London in 1854?in London in 1854?The cholera outbreak was so severe The cholera outbreak was so severe that more than 5
18、00 people died in 10 that more than 500 people died in 10 days.days.Yes.The map gave a valuable clue Yes.The map gave a valuable clue about the cause of the disease.about the cause of the disease.7.Did the map which Dr.Snow draw 7.Did the map which Dr.Snow draw help find the cause of the disease?hel
19、p find the cause of the disease?Many of the deaths were near the Many of the deaths were near the water pump in Broad Streetwater pump in Broad Street.8.Where were many of the deaths in 8.Where were many of the deaths in Broad Street?Broad Street?9.Why did some houses have no deaths?9.Why did some h
20、ouses have no deaths?These families worked in the pub at 7 These families worked in the pub at 7 Cambridge Street.They were given free Cambridge Street.They were given free beer and so had not drunk the water beer and so had not drunk the water from the Broad street pump.from the Broad street pump.I
21、t seemed the water was to blame.It seemed the water was to blame.10.What did Dr.Snow think was 10.What did Dr.Snow think was responsible for the disease?responsible for the disease?He told the people to remove the He told the people to remove the handle from the water pump so it handle from the wate
22、r pump so it could not be used.could not be used.11.What did Dr.Snow advised the 11.What did Dr.Snow advised the people in Broad Street do?people in Broad Street do?12.What else did Dr.Snow find in 12.What else did Dr.Snow find in another part of London?another part of London?In addition,he found 2
23、other deaths.In addition,he found 2 other deaths.13.What conclusion did Dr.Snow tell 13.What conclusion did Dr.Snow tell the public?the public?He announced that polluted water He announced that polluted water carried the disease.carried the disease.They were instructed not to expose They were instru
24、cted not to expose people to polluted water anymore people to polluted water anymore.1 Read the passage and number these 1 Read the passage and number these events in the order that they happened.events in the order that they happened.1.An outbreak of cholera hit London in 1.An outbreak of cholera h
25、it London in 1854.1854.2.John Snow began to test two theories.2.John Snow began to test two theories.3.John Snow investigated two streets 3.John Snow investigated two streets where the outbreak was very severe.where the outbreak was very severe.4.John Snow marked the deaths on a 4.John Snow marked t
26、he deaths on a map.map.Comprehending Comprehending 5.He found that most of the deaths 5.He found that most of the deaths were near a water pump.were near a water pump.6.He had the handle removed from the 6.He had the handle removed from the water pump.water pump.7.He announced that the water carried
27、 7.He announced that the water carried the disease.the disease.8.King Cholera was defeated.8.King Cholera was defeated.John Snow finally proved his idea John Snow finally proved his idea because he found an outbreak that because he found an outbreak that was clearly related to cholera,was clearly re
28、lated to cholera,collected information and was able to collected information and was able to tie cases outside the area to the tie cases outside the area to the polluted water.polluted water.2 Read the passage again and answer 2 Read the passage again and answer these questions.these questions.1 Joh
29、n Snow believed Idea 2 was right.1 John Snow believed Idea 2 was right.How did he finally prove it?How did he finally prove it?No.The map helped John Snow organize No.The map helped John Snow organize his ideas.He was able to identify those his ideas.He was able to identify those households that had
30、 had many deaths households that had had many deaths and check their water-drinking habits.and check their water-drinking habits.He identified those houses that had had He identified those houses that had had no deaths and surveyed their drinking no deaths and surveyed their drinking habits.The evid
31、ence clearly pointed to habits.The evidence clearly pointed to the polluted water being the cause.the polluted water being the cause.2.Do you think John Snow would have 2.Do you think John Snow would have solved this problem without the map?solved this problem without the map?Give a reason.Give a re
32、ason.3 Cholera was a 19th century disease.3 Cholera was a 19th century disease.What disease do you think is similar to What disease do you think is similar to cholera today?Why?cholera today?Why?Three diseases,which are similar today,Three diseases,which are similar today,are SARS,AIDS and bird flu,
33、because they are SARS,AIDS and bird flu,because they are serious,have an unknown cause and are serious,have an unknown cause and need public health care to solve them.need public health care to solve them.HomeworkHomework1.Finish Ex.1 on P42.1.Finish Ex.1 on P42.2.Retell the story.2.Retell the story.
