Unit 1 Reading and thinking （ppt课件）(7)-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Unit 1 Science and Scientists Reading and Thinking John Snow Defeats“King Cholera”Learning objectivesBy the end of this class,students will get information about how John Snow defeated cholera;summarize the stages of scientific research;talk about the significance and contribution of Johns workLead

2、in Are you familiar with these situations?Mask upGet vaccinatedSelf-isolation Positive measures are taken to fight against Covid-19.Lead inBesides coronavirus,what other kinds of epidemics(流行病流行病)do you know?Choleraloss of liquid (缺水缺水)severe vomiting (呕吐呕吐)diarrhea(腹泻腹泻)It begins in the stomach and

3、 a severe case can lead to death without immediate treatment.Pre-readingJohn Snow Defeats“King Cholera”Who?How?What?1.Who was John Snow?2.What is King Cholera?3.How did John Snow defeat King Cholera?Activity 1 Read for the main idea and check predictions Para1 Para 2 Para 4Para 5 John Snow want to u

4、se his knowledge to solve colera.He needed to prove the second theory was correct.John began his study by marking on the map&the process.He finally found out that dirty water was the cause of cholera.John Snow made great contributions to modern epidemiology.Para 3 Who How What How Activity 2 Read fo

5、r stages analyze the results ask a question collect data think of a method find a problem find supporting evidence draw a conclusionPut the seven research stages in order.Activity 2 Find the seven stages in Para.2&3 Para.2 Stage 1 find a problemto agree with or support an opinion,a theory,etc.Activi

6、ty 2 Find the seven stages in Para.2&3 Para.2 Stage 2 ask a questionto carefully examine the facts or find out the truth or how it happenedActivity 2 Find the seven stages in Para.2&3 Para.3 Stage 3 think of a methodActivity 2 Find the seven stages in Para.2&3 Para.3 Stage 4 collect dataActivity 2 F

7、ind the seven stages in Para.2&3 Para.3 Stage 5 analyze the resultsthe water pump was to blameActivity 2 Find the seven stages in Para.2&3 Para.3 Stage 6 find supporting evidence Activity 2 Find the seven stages in Para.2&3 Para.3 Stage 7 draw a conclusion Activity 3 Read for detailed information in

8、 Para.1 What?Its one of in the world,because it causesWhen?Where?What results?the most feared diseasessevere diarrhoea,dehydration In the early 19th centuryEuropeMillions of people died from the diseaseCholeraand even death.Activity 3 Read for detailed information in Para.2&3 What kind of map is it?

9、What does“-”mean?What does“PH”mean?Where is the pump?Snow had the_ of the pump removed.EActivity 3 Read for detailed information in Para.2&3It was believed that cholera was caused by _ or germs in _.ASnow _the places where people who_ had lived.Bbad airfood or watermarked on died The pump water carr

10、ied_.Dcholera germshandlea mapSteps in the researchMany deaths occurred near the _in Broad Street.Some people _ drunk the water from the pump,and lived.A woman and her daughter died in another part of London after _ _.Cwater pumphad notfrom the pumpdrinking waterSnow had the_ of the pump removed.EAc

11、tivity 3 Read for detailed information in Para.2&3It was believed that cholera was caused by _ or germs in _.ASnow _the places where people who_ had lived.Bbad airfood or watermarked on died Many deaths occurred near the _in Broad Street.Some people _ drunk the water from the pump,and lived.A woman

12、and her daughter died in another part of London after _ _.Cwater pumphad notfrom the pumpThe pump water carried_.Dcholera germshandlea mapResearch methodtheoriesprocessevidenceconclusionsolutiondrinking waterActivity 3 Read for detailed information in Para.4&5 1.What caused the outbreak of cholera i

13、n London?A.Bad air B.Water infected by raw waste C.Polluted air D.Water polluted by the air 2.Why was John Snow called the father of modern epidemiology?He helped people know how to prevent cholera.He transformed the way scientists study diseases in use of map and statistics.Activity 4 Group discussion What qualities and scientific spirits do they have in common?The Story of Colera Thank you