人教版必修五Unit1Greatscientistreading1課件（29張）

1、Great scientists Unit 1JOHN SNOW DEFEATS “KING CHOLERA”Reading1. To summarize and remember the main idea of the passage.2. To speak out the detailed information of the passage.3. To know more about John Snow and his achievements.4. To learn some useful words and expressions in the passage.Objectives

2、a general idea certain informationtitles and headingsthe first and last sentences of paragraphsthe first and last paragraphspictures and chartsScan the text forkey words and phrases, dates, etc.Do not need toread the whole text.Skimming for general ideaAfter reading the passage, match the following

3、stageswith the paragraphs.Reading Comprehension ISkimmingStagesDraw a conclusionThink of a methodCollect resultsMake a questionFind a problemAnalyze the resultsFind supporting evidencePara.Stages in an experiment1234567Find a problemMake a questionThink of a methodCollect resultsAnalyse the resultsD

4、raw a conclusionFind supporting evidenceParagraphs & Stages First we should find the problem. Then, think of a method. We should collect as much information as possible. Analyzing results is the most important stage. Before we make a conclusion, it is necessary for us to find supporting evidence

5、.SummaryWhats the main idea of the passage?A. John Snow was a well-known doctor in London.B. The cause 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 defeated the disease.Reading Co

6、mprehension IISkimmingReading Comprehension IIISkimmingRead the passage to find the main idea of each paragraph.John Snow wanted to use his knowledge to solve cholera.He got interested in two theories.He needed to prove the second theory was correct.He found out that dirty water wasthe cause of chol

7、era.Para. 1Para. 2Para. 3Para. 4Para. 6Para. 7Polluted water carried the virus.Finally “King Cholera” was defeated.Para. 5Cholera was spread by germs and not in a cloud of gas.Scanning for specific information Read the passage and number these events in the order that they happened._ John Snow began

8、 to test two theories._ An outbreak of cholera hit London in 1854._ John Snow marked the deaths on a map.Reading Comprehension IVScanning_ He announced that the water carried the disease._ John Snow investigated two streets where the outbreak was very severe._ King Cholera was defeated._ He found th

9、at most of the deaths were near a water pump._ He had the handle removed from the water pump.Answer: 2 1 4 7 3 8 5 6 Reading Comprehension V1.Why couldnt the cholera be controlled at first? A. Its speed of spreading was so fast. B. Its cause wasnt understood C. Its cure wasnt understood. D. Both B.

10、& C.Scanning2. How many people died in 10 days in two particular streets? A. Less than 500. B. More than 500. C. More than 450. D. Less than 450.3. What attitude did John Snow take to the two supposed theories explaining how cholera attacked people? A. Doubtful but he could do nothing about it.

11、B. Objective and he asked his assistants to gather information. C. Acceptable and he was sure about the causes. D. Reasonable but they remained to be proved scientifically. 1 John Snow believed Idea 2 was right. How did he finally prove it?John Snow finally proved his ideabecause he found an outbrea

12、k that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.Reading Comprehension VIAnswer these questions.Scanning2 Do you think John Snow would have solved this problem without the map? Give a reason.No. The map helped John Snow org

13、anizehis 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 tothe polluted water being the cause.3 Cholera was a 19th centur

14、y disease. What disease do you think is similar to cholera today? Why?Three diseases, which are similar today, are SARS, AIDS and bird flu, because they are serious, have an unknown cause and need public health care to solve them.Discuss the question in groups. Group WorkWhat should you do if youre

15、travelling to a country that has a cholera outbreak? Drink only water that you have boiled.Other safe drinks include tea or coffee made with boiled water, bottled beverages with no ice.Discussion Eat only food thats been thoroughly cooked and is still hot, or fruit that youve peeled yourself. Avoid

16、undercooked or raw fish and shellfish. Avoid raw salads and vegetables. Avoid food and drinks from street vendors. TIPSJohn 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 began to gather information. He _ on a

17、 map where all the dead people had lived and he found that manydoctor19thcausedefeatbrokemarked Retell the text by filling in the following blanks.people who had _ the dirty waterfrom the _ died. So he decided that the polluted water carried the virus. He suggested that the _ of all the water suppli

18、es be _. The water companies were _ not to expose people to polluted water any more. Finally, “King Cholera” was defeated.pumpsourceexaminedinstructeddrunkThings I can doEvaluationI can talk about some great scientists.5 4 3 2 1I can understand the reading passage.5 4 3 2 1I can express my opinion on how cholera was defeated.5 4 3 2 1I can understand and spell the new words and expressions and can use them in new situ