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1、Unit 1 Great scientists,Unit 1,Great scientists,Period 1&2 Warming up and Reading I,Warming up,What impress you most in 2003?,Which person impress you most during the SARS?,What other infectious diseases do you know?,For example: When you eat some seafood,You feel,Maybe you have got _.,Cholera,Warmi
2、ng up-questions (2m),John Snow defeats “King cholera”,Reading,Skimming: answer the following questions:,What are the two theories John Snow got interested in? What did John Snow experience show? How to prevent the disease happening again?,Reading-I-skimming (2m),1.The two theories are : The first su
3、ggested that cholera multiplied in the air without reason. The second suggested that people absorbed this disease into their bodies with their meals.,3.To prevent this from happening again, John Snow suggested that the source of all water supplies be examined and new methods of dealing with polluted
4、 water be found.,2.John Snow had shown that cholera was spread by germs and not in a cloud of gas.,Keys:,the cause of the serious disease of cholera.,_ that attacked victims,_from the next cholera attack to test theories. Try to prove which method was correct.,He found the cause of cholera was_.,Ide
5、a 2. Because the data showed a connection with the water.,John Snow was able to _ once its cause was know.,No body knew_,Strange cloud in the air,with their meals,Collect data,the polluted water,defeat cholera,Reading-II-scanning (3m),Detailed reading,Read the passage again, and then find out the di
6、fficult or key sentences with the partner.,Reading-III-detailed reading (2m),1. But he became inspired when he thought about helping ordinary people exposed to cholera.,In the case of an infectious disease it means not taking care to stop its spread.,2.He got interested in the two theories explainin
7、g how cholera killed people.,This means that he began to find out about both theories.,3. It seemed the water was to blame.,The sentence means Probably it was the water that caused the illness.,Discussion: Discuss the following questions in groups of four.,1.,2.,3.,Cholera was a 19th century disease
8、. What disease do you think is similar to cholera today?,John Snow believed Idea 2 was right. How did he finally prove it?,Do you think John Snow would have solved this problem with- out the map? Give a reason.,Discussion (4m),Two diseases, which are similar today, are SARS and AIDS because they are
9、 both very serious, have an unknown cause and public health care to solve them.,John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.,Keys,1.,2.,No. The map helped Jo
10、hn Snow organise his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.,3.,Lets have
11、a competition!,Extension(延伸),1.Which scientist discovered that objects in water are lifted up by a force that helps them float?,B. Archimedes阿基米德,C. Thomas Edison 爱迪生,A. Charles Darwin 达尔文,2. Who wrote a book explaining how animals and plants developed as the environment changed?,Marie Curie居里,C. Ch
12、arles Darwin 达尔文,B. Gregor Mendel 门道尔,3.Who invent the first steam engine?,Thomas Newcomen 纽兴门,C. Thomas Edison,B. Archimedes,4. Who used peas to show how physical characteristics are passed from parents to their children.,A. Thomas Edison,C. Archimedes,B. Gregor Mendel,5. Who discovered radium?,A.
13、Marie Curie,C. Newton,B. Zhang Heng,6.Who invented the way of giving electricity to everybody in large cities?,A. Stephen Hawking,C. Thomas Edison,B. Archimedes,7.Who was the painter that studied dead bodies to improve his painting of people?,A. Gregor Mendel,C. Marie Curie,B. Leonardo da Vinci 达芬奇,
14、8. Who invented a lamp to keep miners safe underground?,A. Sir Humphry Davy,C. Faraday,B. Thomas Newcomen,9. Who invented the earliest instrument to tell people where earthquakes happened?,A. Charles Darwin,C. Watt,B. Zhang Heng,10.Who put forward a theory about black holes?,A. Stephen Hawking,C. Co
15、pernicus,B. Archimedes,Language points for reading I,Unit 1,Great scientists,Period 3 Learning about language,Read the passage again and 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
16、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 polluted water carried cholera. He suggested that the _ of all water supply be _ and new methods of _ with polluted water be found. Fina
