1、Unit 1 Reading and ThinkingUnderstand the questioning mind What disease can you think of when you look at these pictures?COVID-19 Get vaccinated Self-isolationMask up We stick together to fight against Covid-19.What disease can you think of when you look at these pictures?Bird-flu malaria plague（鼠疫）
2、（鼠疫）Ebola Smallpox（天花）（天花）An epidemic just like coronavirus hit Europe in the early 19th century,do you know what it is?Cholera infection begins in the stomach.Approximately 1 in 10 people who get sick with cholera will develop severe symptoms such as watery diarrhea(腹泻腹泻),vomiting(呕呕吐吐),and leg cra
3、mps(腿痛性痉挛腿痛性痉挛).CholeraJohn Snow Defeats“King Cholera”1.Discuss the following stages of scientific research in 1.Discuss the following stages of scientific research in groups.What order would you put them in?groups.What order would you put them in?_ analyse the results_ ask a question_ draw a conclu
4、sion_ collect data_ find a problem_ find supporting evidence_ think of a methodJohn Snow Defeats“King Cholera”板书Read the title and predict.It used to be one of the most feared diseases in the world.It causes severe diarrhoea,dehydration,and even death.Millions of people died from it.He is a famous d
5、octor who defeats the cholera and he attended to Queen Victoria when she gave birth.Who?What?/How serious?While-readingJOHN SNOW DEFEATS“KING CHOLERA”How did he do it?1.Find a problemIn the early 19th century,when an outbreak of cholera hit Europe,millions of people died from the disease.2.Ask a que
6、stionHow did the cholera spread?Two contradictory theories:n Bad air caused the disease.n Cholera was caused by an infection from germs in food or water.Which one does John Snow believe more?While-readingMatch John Snows research with the 7 stages.Read Paragraph 3-4 and find out how he collected dat
7、a and analyze the results.He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days.Observe and mark on the exact places where all those who died had lived.3.Think of a method John Snows cholera mapEvidence 1Some households(such as 20
8、and 21 Broad Street,and 8 and 9 Cambridge Street)had no deaths.pubpumpBroad StreetCambridge Street4.Collect data5.Analyse the results6.Find supporting evidenceThere were multiple deaths near the water pump.Can John Snow make sure that the water pump was to blame?What is more,in another part of Londo
9、n,a woman and her daughter had died of cholera after moving away from Broad Street.It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day.Evidence 21.How to make sure that water pump?2.What other evidence did John Snow find to support the resu
10、lts?After removing the handle of the pump,the disease was stopped in its tracks.Some companies sold water that was polluted by raw waste.People who drank this water were much more likely to get cholera than those who didnt.More evidenceAIt was believed thatcholera was caused by bad _ or germs in _.B
11、Snow _ the places where the people who _ had lived.CMany 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 _.airfood or watermarked on a mapdiedwater pumphadntdrinking water from the pumpDThe
12、pump water carried _.EThe _ of the pump was removed.Match the following headers with the letters from the chart above.Write AE in the blanks.1.conclusion _ 2.evidence _ 3.process _4.solution _ 5.theories _cholera germshandleDCBEARead Paragraph 5 and answer the question.In his use of maps and statist
13、ics,Snow transformed the way scientists study diseases.Why is John Snow considered as the father of modern epidemiology?1.What was the most important tool Snow used to defeat cholera?What common medical tools,e.g.a microscope,didnt he use?Why?He used maps and statistics to analyse where the deaths occurred.Post-reading2.What qualities and scientific spirits do they have in common?To raise new questions,new possibilities,to regard old problems from a new angle,requires creative imagination and marks real advance in science.-Albert Einstein&Leopold InfeldHomework
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