人教新课标必修五Unit-1-Great-scientistswarming-up-and-reading[课件]-2.ppt-(课件无音视频)

1、人教新课标必修五Unit_1_Great_scientists-warming_up_and_reading课件Pre-ReadingPre-Readingrelating to science,or using the organized methods of science.a scientific discoverya scientific experimenta scientific theoryFind supporting evidence a serious infection of the bowels caused by drinking infected water or

2、eating infected food,causing diarrhoea(腹泻腹泻),vomiting（呕吐）（呕吐）and often death.传染性很强的肠道疾病。传染性很强的肠道疾病。ReadingReadingDo you know what did this map was used for in 1854?Finding out the cause of Cholera.A map of Broad StreetWhat method did he use?Broad StreetPublic houseDraw a conclusionFind a problemMake

3、 up a questionThink of a methodCollect resultsAnalyse the resultsPara 1Para 2Para 3Para 4Para 5Para 6Match themFind supporting evidencePara 7Task 2Mind Map of the textJohn Snow began to test two theories.An outbreak of cholera hit London in 1854.John Snow marked the deaths on a map.He announced that

4、 the water carried the disease.John Snow investigated two streets where the outbreak was very severe.King Cholera was defeated.He found that most of the deaths were near a water pump.He had the handle removed from the water pump.21473856Read the passage and number these events in the order that they

5、 happened.Discussion:Discuss the following questions in groups of four.1.2.3.Cholera was a 19th century disease.What disease do you think is similar to cholera today?Why?John Snow believed Idea 2 was right.How did he finally prove it?Do you think John Snow would have solved this problem with-out the

6、 map?Give a reason.Keys1.John Snow finally proved his idea because he found an outbreak that was clearly related to cholera,collected information and was able to tie cases outside the area to the polluted water.No.The map helped John Snow organise his ideas.He was able to identify those households t

7、hat 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 to the polluted water being the cause.2.Two diseases,which are similar today,are SARS and AIDS because they are both very serious,have an unknown cause and public health care to solve them.3.