必修5Unit5-Great-Scientists公开课优质课件

1、Unit 1 Great scientistsReadingUnit 1 Great scientistsReadingMany deaths in African countries in 2005 and even nowMany deaths in African countriIt is a kind of terrible disease caused by drinking dirty water or food, and it caused a lot of deaths in the old times and it was very difficult to defeat.I

2、t is a kind of terrible diseaIs there no way to defeat cholera?No ! Is there no way to defeat cholJohn Snow Defeats “King Cholera”John Snow Defeats “King CholerFast readingWhats the main idea of the passage?John Snow was a well-known doctor in London.The cause of Cholera was polluted water.The sourc

3、e of all drinking water should be examined.How John Snow collected, analyzed data and found the cause of the disease and solved it.Fast readingWhats the main idCareful readingPara.11.Who was John Snow?2.What made John Snow inspired?3.What would happen every time cholera broke out?He was a famous doc

4、tor in Londonso expert, indeed, that he attended Queen Victoria as her personal physician.He became inspired when he thought about helping ordina-ry people exposed to cholera.Many thousands of terrified people died.Careful readingPara.11.Who wasJohn Snow Doctor，expertInspired, help, people, exposed

5、to “King cholera”Deadly diseaseCause & cureunderstoodPeople diedChallenge OutbreakPara.1 Find out What caused cholera? Find a problem: What caused cholera? John Snow Doctor，expertInspireCareful readingHow many theories about cholera were there?Two Para. 2Careful readingHow many theorifromstomachPara

6、. 2 Cholera multipliedgasfloatfound victimsabsorbbodiesintodiseasediseasebodypeoplediedMake a question: Which theory to believe ? Theory 1 Theory 2fromPara. 2 Cholera multipliedPara. 3Which theory did John Snow think was correct?2. What did he do to collect evidence?Careful readingJohn Snow suspecte

7、d that the second theory was correct but he needed evidence.He gathered information.Para. 3Which theory did John SPara. 3Theory （） Need evidenceOutbreak hitLondon In 1854BeganenquiryGather informationAs disease spreadIn the two streets,Outbreak, so severe,More than 500, diedDetermined to find out wh

8、y Think of a methodPara. 3Theory （） Need evidenPara. 4How did he get a valuable clue about the cause of the disease?2. What did he notice and discover ?3. What was to blame for the cholera?Careful readingFirst he marked on a map the exacted places where all the dead people have lived, and this gave

9、him a valuable clue about the cause of the disease.You can get the answer from sentences 2, 3, 5, 6.It seemed that the water was to blame.Para. 4How did he get a valuabA map of Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water from the pump was

10、 to blame.Public houseParagraphs 3+4A map of Broad StreetWhat metPara. 4Marked on a map the place where the dead livedGaveclueThe deathsnearwater pump( in Broad Street)Houses (no deaths)workedpubgivenFree beerWater was to blame. Collect results Para. 4Marked on a map the plaPara. 5Why did he tell pe

11、ople to remove the handle from the pump?What happened after the handle was removed?Careful readingBecause he found that the water came from the river polluted by the dirty water from London.The disease slowed down.Para. 5Why did he tell people comefromPara. 5look intoThe sourcethe polluted rivertold

12、 people Remove handle usediseaseSlowed downshow: Cholera was spreadgermsgas Analyze the resultscomePara. 5look intoThe sourcParas. 6&7What supporting evidence did he find?2. What did he do next with the exact evidence?3. What measures did John Snow take to prevent the disease from spreading?Careful

13、readingHe found supporting evidence from two other deaths that were linked to the Broad Street outbreak.With the exact evidence he was able to announce with certainty that polluted water carried the virus.He suggested that the source of all the water supplies be examined. The water companies were in

14、structed not to expose people to polluted water any more.Paras. 6&7What supporting evidAway B.S.Para. 6Found supporting evidence:Two other deathswere linked to B. S. outbreakAnnounced(with certainty): polluted rivercarriedthe virusA woman like, had water deliveredAfter drinking She & daughterdiedIn

15、another part of London Find supporting evidence AwayPara. 6Found supporting einstructedPara. 7suggestTo prevent this happening againThe source of water suppliesBe examinedWater companiesExpose people to polluted waterJohn Snow Defeated “King Cholera” Draw a conclusion instructedPara. 7suggestTo preW

16、hat should we pay attention to in our daily life in order not to get infected with cholera? DiscussionWhat should we pay attention tDrink boiled waterWhat should we pay attention to in our daily life in order not to get infected with cholera? Wash hands oftenKeep away from fliesChoose fresh sea food

17、Keep the kitchen cleanDiscussionCook raw food thoroughlyDispose rubbish properly.Drink boiled waterWhat should The passage is written as a report of an experiment andthere are 7 steps. What are they?1.Find a problem:(发现问题)2.Make up a question:(形成研究主题)3.Think of a method:(找出研究方法)4.Collect results:(收集

18、材料)5.Analyse results:(分析材料)6.Find supporting evidence:(寻找支持性证据)7.Draw a conclusion:(得出结论)ExerciseThe passage is written as a re 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 people who had drunk the dirty water from the _ died. So he decided that the pollut