Great scientists_图文.pptVIP

Do you know this person? Number these events in the order that they happened. John 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 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. 3. 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 John Snow collected, analyzed data and found the cause of the disease and solved it . 1. John Snow believed Idea 2 was right. How did he finally prove it? He found an outbreak that was clearly related to cholera. He collected, analyzed the data and found the cause of the disease and solved it . 3. Cholera is a 19th century disease. What disease do you think is similar to cholera today? Two diseases, which are similar today, are SARS and AIDS because they are both serious, have an unknown cause and need public health care to solve them. Read the text carefully. Retell the passage with your own words Remember the new words and phrases 3. How serious was the disease outbreak in London? * * Great scientists Unit 1 Read the new words and phrases on P91 New words reading When we talk about great scientists, who will come into your mind? Brainstorming Father of hybrid rice Yuan Longping “Weak sits around waiting for opportunity; strong manufacturing timing” 弱者坐待时机；强者制造时机。 She got two Nobel Prizes, one for physics and the other for chemistry. Madame Curie 居里夫人 “If I have seen further, it is by standing on the shoulders of giants.” Isaac Newton 艾萨克·牛顿 Reading THINK WORK FIND How do the scientists usually do scientific research? 1. Find a problem 2. Make a question 3. Think of a met