中小学英语公开课获奖课件精选——《Unit 1 Great scientists 》.ppt
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1、,Unit 1 Great scientists,执教教师:XXX,1. Who discovered that objects in water are lifted up by a force that helps them float?,Archimedes,2. Who wrote a book explaining how animals and plants developed as the environment changed?,Charles Darwin,3. Who invented the first steam engine?,James Watt,radium,4.
2、 Who discovered radium?,Marie Curie,Thomas Edison,5. Who invented the way of giving electricity to everybody in large cities.,6. Who was the painter that studied dead bodies to improve his painting of people?,Leonardo da vinci,7. Who invented the earliest instrument to tell people where earthquakes
3、happened.,Zhang Heng,8. Who put forward a theory about black holes?,Stephen Hawking,John Snow defeats “King Cholera”,Whats the passage about?John Snow was a well-known doctor in London.The cause of Cholera was polluted water.The source of all drinking water should be examined.How John Snow collected
4、, analyzed data and found the cause of the disease and solved it .,Prediction,Para.1 John Snow was a famous doctor in London-so expert, indeed, that he attended Queen Victoria as her personal physician. But he became inspired when he thought about helping ordinary people exposed to cholera. This was
5、 the deadly disease of its day. Neither its cause nor its cure was understood. So many thousands of terrified people died every time there was an outbreak. John Snow wanted to face the challenge and solve this problem. He knew that cholera would never be controlled until its cause was found.,this pr
6、oblem,This,What might cause cholera?,Para.2,1. Cholera multiplied in the air.,2. People absorbed this disease into their bodies with their meals.,gathered information and marked them a map,How did John Snow prove his idea?,Broad Street,The water from the pump may cause it.,Para.3-4,Many deaths,No de
7、ath,pub,The water was from the river polluted by the dirty water from London.,Whats wrong with the pump water?,Para.5,Removed the handle The disease slowed down,Cholera was spread by .,germs and not in cloud of gas.,What was the supporting evidence?,A woman and her daughter who lived far away but dr
8、ank the water from the pump also died of cholera.,Para.6,The polluted water carried the virus.,The source of all the water supplies be examined.Not to expose people to polluted water any more.,Para.7,John Snow carried out his research by _. A. Making experiments B. Making comparison C. Making fact i
9、nference(事实推理) D. Making hypothesis(条件假设),John snow-a doctor, Queen Victoria as her personal physician. But he was willing to help ordinary people cholera. Many people died every time there was an . He wanted to face the and solve the problem. Two theories caught his attention. The first suggested t
10、hat cholera multiplied in the air. The second suggested that people this disease into their bodies and the disease attacked the body. John Snow the second was right but he needed evidence. When another outbreak hit London in 1854, he was ready to begin his and tried to get information. He found that
11、 most of the deaths were near a water pump and the spread of the disease was 8 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 be examined. Finally “King Cholera” was .,attended,exposed to,outbreak,challeng
12、e,absorbed,suspected,enquiry,linked to,announce,defeated,find a problem,make up a question,analyze the results,collect results,draw a conclusion,find supporting evidence,think of a method,find a problem,make a question,think of a method,collect results,analyze the results,find supporting evidence,dr
13、aw a conclusion,Stages to prove a new idea in scientific research?,Edison invented electric bulb,oil lamp, dim, fire disaster,safe, bright, electric bulb,make filament experiments,with different filaments(灯丝), 1600 kinds, failed,tungsten(钨丝), burn for a long time, used until now,brighten, changes, b
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