Unit 1 Reading and Thinkingppt课件 -（2022新）人教版高中英语选择性必修第二册.pptx

1、Science and ScientistsV i c k yReading and ThinkingTeaching GoalsEnable the Ss to get to know some knowledge about Cholera. Enable the Ss to understand the passage well.Let the Ss learn some reading skills by scanning and skimming. To learn from the great scientists and develop the noble spirits. Th

2、e secientists that we knowTo YouyouTo YouyouEinsteinCholeraloss of liquid (缺水)severe vomiting(呕吐)diarrhea(腹泻)It begins in the stomach and a severe case can lead to death without immediate treatment. 01020304SARSAIDS05Bird FluCholeraCOVID-19infectious diseasesThey can be spread to other people. They

3、have an unknown cause. They are difficult to cure. Characteristics of infectious diseasesMany years ago, a terrible disease named cholera in the world killed millions of people. People were very afraid of it, but they didn t know what to do. Luckily, a young doctor decided to find out how to prevent

4、 and treat the disease. Finally, the doctor won the battle.John Snow What will be talked about from the title ?John Snow Defeats “King Cholera”Who ?How ?What ?Skimming: main idea of each paragraphPara1 Para 2 Para 4Para 5 John Snow want to use his knowledge to solve colera.He got interested in two t

5、heories explaining how colera killed people.He needed to prove the second theory was correct.He finally found out that dirty water was the cause of cholera.Finally “kin Cholera” was defeated.Para 3 Read the passage quickly and get the main idea of each paragraph.Skimming: Structure of the passagePar

6、a1Phenomenon para 1 Para2Para3Para4Para5two theoriesmake an investigationhow? find? other casesWhat? Its one of _ in the world, because it causes _.When? _Where? _What results? _the most feared diseasessevere diarrhoea, dehydration and even deathIn the early 19th centuryEuropeMillions of people died

7、 from the diseaseCholeraTask2. Read the 1st paragraph quickly and fill in the mind map.Task 1: Find the problem Two theories The first theory bad air caused the diseaseCholera was caused byan infection from the germs in food or water.Proof was need.The second theory Read the 2nd paragraph carefully

8、and find out the two theories.Task 2: Ask a questionThe pump water carried _.Many deaths occurred near the _ in Broad Street.Some households had no deaths. they worked in and had been given , so had not drunk . A woman and her daughter had died after _, because she had the water_ every day.Snow bega

9、n by _ the places where people _.Snow had the handle of the pump _.marking on a map died had livedmoving away from Broad Streetdelivered to her housecholera germsremovedThink of a methodCollect data and analyse the resultsConclusionSolutionwater pumppubwater from the pumpfree beerFind supporting evi

10、denceBroad Street37403816209821Many deaths happened here.No death happened here.Public houseIt seemed that the water from the pump was to blame.Anayse the resultsAs a doctor, he helped us to prevent cholera.As a scientist, he found out what caused cholera.Evaluation of John SnowWhat qualities do you need to be a scientist? Qualitiespassion creativitydevotionselflessness hard work