10942_27498713065.ppt

 1. Can you name some famous scientists?2.In your opinion, what qualities 3. should a scientist have ?Isaac NewtonAlbert EinsteinSteven HawkingDo you know these great scientists and their main achievement?Zhang HengThe earliest instrument of telling earthquakesThe first steam engineLeonardo da Vinci遗传学遗传学 电电浮力定理浮力定理 镭镭进化论进化论 画家画家 蒸汽机蒸汽机矿工安全灯矿工安全灯黑洞理论黑洞理论地动仪地动仪阿基米德阿基米德 Archimedes达尔文达尔文 Charles Darwin纽科文纽科文 Thomas Newcomen孟德尔孟德尔Gregor Mendel居里夫人居里夫人Marie Curie爱迪生爱迪生Thomas Edison达芬奇达芬奇Leonardo da Vinci汉弗来汉弗来.戴维爵士戴维爵士Sir Humphry Davy张衡张衡Zhang Heng斯蒂芬斯蒂芬.霍金霍金 Stephen HawkingJohn Snow ( 1813~ 1858) Englishman A brief introduction of choleraBroad StreetBacteria of choleraKing Cholera is an usurper, and filth is treason!John Snow ( 1813~ 1858) Englishman Broad StreetPut the stages on page 1 about research into a disease in correct order .1234567Find a problemMake up a questionThink of a methodCollect resultAnalyse resultRepeat if necessaryDrew a conclusionSkimming1.What’s 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 did John Snow collect, analyze data and find the cause of the disease and solved it .2. What are the two theories explaining how cholera killed people?3. What helps John Snow find the clue about the cause of the disease?4. When was John Snow able to announce with certainty that polluted water carried disease?Para 2A map of London After he found two deaths in another part of London that were liked to the Broad Street outbreak.Find out the main idea (or topic sentence) of each paragraph:John Snow wanted to use his knowledge to solve cholera.He got interested in two theories explaining…He needed to prove the second theory was correct.He found out that dirty water was the cause of choleraPara. 1Para. 2Para. 3Para. 4Para. 5Para. 6Polluted water carried the diseaseFinally “King Cholera” was defeated As the disease spread quickly, ______ _______________________He marked on a map where all the dead people had lived, ___________________and found out _________________ was the cause. Then he suggested that the source of all drinking water______________ John began to gather information:3. How did John Snow finally defeat Cholera?analyze all evidencesthe polluted watermust be examined. Scanning and fill in the chart on Page 3.2. Cholera was 19th century disease, which two diseases are similar to cholera today ? Why ? SARS and AIDS. They are both very serious, have unknown cause and need public health care to solve them.。