reading unit1 Great Scientists.ppt

1、Welcome,Unit 1 Great scientists,He is the father of super hybrid rice and one of the great scientists.,1. Who wrote a book explaining how animals and plants developed as the environment changed?,Charles Darwin,Do this quiz,2. Who discovered radium?,3. Who invented the way of giving electricity to ev

2、erybody in large cities?,Madam Curie,Thomas Edison,4. Who put forward a theory about black holes?,Stephen Hawking,Reading,match them,7 steps Draw a conclusion Think of a method Collect results Make a question Find a problem Analyse the results Find supporting evidence,Fast-reading,What is the main i

3、dea of the passage? A. John Snow was a well-known doctor in London. B. The case of cholera was polluted water. C. The source of all drinking water should be examined. D. How John Snow collected, analysed data and found the cause of the disease and solved it.,the content of the text,Para 1,Para 2,Par

4、a 3,Para 4,Para 5,Para 6,Para 7,7 steps Draw a conclusion Think of a method Collect results Make a question Find a problem Analyse the results Find supporting evidence,Careful Reading,Para.1 Find a problem.,John Snow was an doctor in London who Queen Victoria as her personal . He thought about helpi

5、ng ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem.,expert,attended,physician,exposed,cure,challenge,Reading carefully,What caused cholera?,What is the problem?,Para.2 Make a question:,Reading carefully,Two theories (ideas):,1. Cho

6、lera multiplied in the air.,2. People absorbed it into their bodies with their meals.,Para.3 Think of a method,Reading carefully,1. What happened in 1854? 2. How many people died in 10 days? 3. What did John Snow do at that time?,Cholera outbreak hit London.,More than 500,He suspected the second the

7、ory was right and began his enquiry,A map of Broad Street,What method did he use?,Broad Street,Many deaths happened here.,No death happened here.,Para.4 Collect results,Reading carefully,These families had not drunk the water from the Broad Street pump.,It seemed that the water was to blame for chol

8、era.,？,Which house has the largest number of deaths in this map? A. No. 12 B. No.2 C. No.38 D. No. 29,Para.5 Analyse the results,Reading carefully,What happened to the pump water? 2. what did the people do？,The water was from the river polluted by the dirty water from London.,Remove the handle from

9、the water pump so that it could not be used.,Para.6 Find supporting evidence,Reading carefully,What s the extra evidence?,A woman and her daughter who lived far away but drank the water also died.,Para.7 draw a conclusion,Reading carefully,To prevent cholera from spreading again, what did John Snow

10、do?, Suggested that the source of all water supplies be examined. Instructed the water companies not to expose people to the polluted water any more.,The polluted water caused cholera.,Draw a conclusion,Find a problem,Make a question,Think of a method,Collect results,Analyse the results,Para 1,Para

11、2,Para 3,Para 4,Para 5,Para 6,Find supporting evidence,Para 7,Review 7 steps that John Snow took,Summary John Snowa doctor，_ Queen Victory as her personal _.But he was willing to help ordinary people _ cholera. Many people died _ there was an _ .He wanted to face the _ and solve the problem. Two the

12、ories caught her attention. The first suggested that cholera multiplied in the air. The second suggested that people _ this disease into their bodies and the disease _ the body. John Snow _ the second was right but he,attended,physician,exposed to,every time,outbreak,challenge,absorbed,attacked,susp

13、ected,needed evidence. When another outbreak hit London in 1854，he was ready to begin his ._ and tried to get information.He found that most of the deaths were near a water _ and the spread of the disease was _ water.With the evidence，he was able to _ that polluted water carried the virus.After that，he suggested the source of all the water supplies _.Finall