人教新课标必修五UNIT1GREATSCIENTISTS-READING[课高中课件下载.ppt

unit 1 great scientists -by liu yunfang alexander bell electricity thomas edison the first telephone wright brothers the electric lamp madame curie black holes in universe franklin theory of gravity steven hawking the first plane elbert einstein radium isaac newton the theory of relativity scientists & contributions: unit 1 great scientists do you know the great scientists?do you know the great scientists? 1.who invented the first modern steam 1.who invented the first modern steam engine?engine? james watt (瓦特) 2.who discovered radium?2.who discovered radium? madame curie 3. who is the 3. who is the inventor of electric inventor of electric light bulb(light bulb(电灯电灯)?)? thomas edison 4.who invented the 4.who invented the earliest instrument to earliest instrument to tell people where tell people where earthquakes happened?earthquakes happened? zhang heng 5.who is the 5.who is the father of super father of super hybrid rice?hybrid rice? yuan longping 6. do you know who 6. do you know who defeated “king defeated “king cholera”?cholera”? john snow 1.which scientist discovered that objects in water are lifted up by a force that helps them float? archimedes (287-212 bc) an ancient greek mathematician&physicist) 2.who wrote a book explaining how animals and plants developed as the environment changed? charles darwin (1808-1882) british author of the origin of species “father of modern biology” 7.who was the painter that studied dead bodies to improve his painting of people? last supper mona lisa leonardo da vinci (1452-1519) italian artist 8.who invented a lamp to keep miners safe underground? sir humphry davy (1778-1829)british miniature miners safety lamp 10.who put forward a theory about black holes? stephen hawking (1942-) a british astronomer john snow is a well-known doctor in the 19th century in london and he defeated “king cholera”. do you know what kind of disease is do you know what kind of disease is cholera?cholera? it is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat. cholera: it begins in the stomach and a severe case can lead to death without immediate treatment. and the victims died very quickly from a loss of liquid after severe vomiting(呕吐) and diarrhoea(腹泻). ? the causes of cholera ? the correct or possible theory ? collect data on those where people were ill and died ? plot information on a map to find out where people died or did not die ? analyse the water to see if that is the cause of the illness. ? find other evidences to confirm his conclusion ? the advice of john snow about how to solve the problem steps:what/how? 1.find a problem 2.make up a question 3.think of a method 4.collect results john snow defeats “king cholera”john snow defeats “king cholera” what causes cholera? which theory is correct? collect information on those who were ill or died and where they got their water mark information on a map to find out where people died or did not died 6.repeat if necessary 7.make a conclusion 5.analyse results analyse the water to see if that is the cause of the illness find other evidence to make sure the conclusion the water is to blame. the source of all drinking water should be examined. careful reading: john snow was an doctor in london who queen victoria as her personal . he thought about helping 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 careful reading: 1.what were the two theories about the cause of cholera? 2.which did john snow want to prove? 3.what was his method of doing the research? multiplied victims absorb the second one. to gather information in two particular streets. careful reading: 1.what did he do with the results of his enquiry? 2.what valuable clue did he get about the cause of the disease? 3.what might be the cause? marked on a map many of the deaths had no deaths. it seemed that the water was to blame for cholera. many of the deaths were near the water pump in broad street. death part of snows cholera map careful reading: 1.why did he tell people to remove the handle from the pump? 2.what happened after the handle was removed? so that slowed down careful reading: 1.where did the woman live and what did she had delivered to her house every day? 2.what did their deaths suggest? 3.what measures did john snow take to prevent the disease from spreading? away from broad street water from the pump the polluted water carried the virus suggested thatbe examined were instructed not to exposeto draw a conclusion think of a method collect results make a question find a problem analyse the results find supporting evidence stages in setting out a new scientific idea: dicussing john snow defeats “king cholera”john snow defeats “king cholera” the passage is written as a report of the passage is written as a report of an experiment and there are an experiment and there are 7 steps7 steps: : 1.find a problem:(1.find a problem:(发现问题发现问题) ) 2.make up a question:(2.make up a question:(形成研究主题形成研究主题) ) 3.think of a method:3.think of a method:( (找出研究方法找出研究方法) ) 4.collect