人教版英语必修五第一单元-great-scientists-阅读课件.ppt

1、Unit 1Great ScientistsThey are doing something about science.They are doing some scientific research.a scientific discoveryStage 1 Get ready for learningStep1 Lead in the topicStage 1 Get ready for learningStep2 Warm upDraw a conclusion Think of a method Collect results Make a question Find a proble

2、m Analyse the results Find supporting evidenceTo reach a decisione.g.We can draw some conclusions from our discussion.To examine the nature or the structure of sth.in order to understand or explain it.e.g.The teacher analyses the long sentence.1652734Task1 Put the stages in setting out a new scienti

3、fic idea in a right order.Stage 2 Pre-readingStep3 Warm upa kind of terrible infectious diseaseDo you know about cholera?It is a kind of terrible infectious disease caused by drinking water or eating food with the bacteria and it caused a lot of deaths in the old times and it was very difficult to d

4、efeat.Stage 2 Pre-readingStep4 Predict12John Snow Defeats“King Cholera”Task2 Predict the content according to its title and pictures.Stage 3 While-readingStep5 ScanningTask3 Read the passage as quickly as you can and find out the general idea.How John Snow found the cause of cholera and finally defe

5、ated it.Stage 3 While-readingStep6 Guess the meaningTask4 Guess the meaning of some unknown wordsJohn Snow was a famous doctor in Londonso expertthat he attended Queen Victoria as her personal physician.Task5 Read and write down the main idea of each paragraph.Stage 3 While-readingStep7 SkimmingPara

6、.1:John Snow was a famous doctor and he wanted to find the cause of cholera.Para.2:John Snow became interested in 2 theories about cholera.Para.3:John Snow suspected the 2nd theory was correct and he collected information.Para.4:It seemed that the polluted water was the cause of cholera with the hel

7、p of the map.Para.5:John Snow found that the cause of cholera was that the source of the water was polluted.Stage 3 While-readingStep7 SkimmingTask5 Read and write down the main idea of each paragraph.Para.6:John Snow was sure enough that the polluted water carried the disease of cholera with an ext

8、ra evidence.Para.7:John Snow suggested how to prevent cholera from happening again.Stage 3 While-readingStep8 MatchTask6 Read the passage again and match the 7 stages with each para.and find out releated information.stagespara.What/How?1.Find a problem 1What causes cholera?2.Make a question2Which th

9、eory is correct?3.Think of a method 3Collect information on those who were ill or died and where they got their water.4.Collect results4He marked information on a map to find out where people died or did not die.stagespara.What/How?5.Analyse the results 5He looked into the source of the water to see

10、 if that is the cause of cholera.6.Find supporting evidence6Find other evidence to make sure the conclusion.7.Draw a conclusion7The polluted water was to blame and the source of all the water supplies should be examined.Stage 3 While-readingStep8 MatchTask6 Read the passage again and match the 7 sta

11、ges with each para.and find out releated information.Stage 3 While-readingStep9 SummaryTask7 Read the passage again and fill in the blanks.John Snow was a famous _ in the 19th century,during which neither the _ nor the _ of cholera was understood.And he wanted to find out which _ about cholera was r

12、ight.In 1854 when a cholera broke out,he began to _ information.He _ on a map where all the died people had lived and he found that many people who had drank the dirty water from the _ died.And with the _ _ from other 2 deaths,he decided that the polluted water carried cholera.He suggested that the

13、source of all water supplies _ _.Finally,“King Cholera was defeated”.doctorcurecausetheorypumpmarkedcollectexaminedsupportingevidencebeStage 4 post-readingStep10 DiscussionTask8 Read the passage again and fill in the blanks.Do you think John Snow would have solved this problem without the map and wh

14、y?No.The map helped John Snow organize his ideas and provide him valuable clues.After he collected information and marked the information on the map,he would clearly know the position where all these dead people lived and where there were no deaths,and then he came up with the idea to check their drinking water and thus he reached to the key point.Stage 5 HomeworkStep11 DiscussionTask9 Discuss in a group of 4 and report your own experiments and try to follow the 7 stages.Find a problem Make a questionThink of a methodCollect resultsAnalyse the results Find supporting evidenceDraw a conclusion