必修五5-unit1-Great-Scientists-reading-精品课件-公开课课件.ppt

Great scientists Warming up What do you know about great scientists? Try this quiz and find out who knows the most? Are you ready? Let’s go! 1. Which scientist discovered that objects in water are lifted up by a force that helps them float? Archimedes It’s… Give me a place to stand and I will move the world ! 2. Who wrote a book explaining how animals and plants developed as the environment changed? Charles Darwin 3. Who invented the first steam engine? James Watt 4. Who used peas to show how physical characteristics are passed from parents to their children? Gregor Mendel radium 5. Who discovered radium? Marie Curie Thomas Edison He invented the way of giving electricity to everybody in large cities. 7. Who was the painter that studied dead bodies to improve his painting of people? Leonardo da vinci 8. Who invented a lamp to keep miners safe underground? Sir Humphry Davy 9. He invented the earliest instrument to tell people where earthquakes happened. Zhang Heng 10. Who put forward a theory about black holes? Pre-reading: What do you know about infectious diseases? infectious diseases can spread easily , They may do harm to people , AIDS and SARS are infectious diseases, they are difficult to cure. infectious diseases : They can be spread to other people. They have an unknown cause. They are difficult to cure. They need public health care to solve them. Draw a conclusion Think of a method Collect results Make a question Find a problem Analyse results Find supporting evidence Put the phrases on page 1 in correct order. 得出结论 找到方法 收集材料 提出问题（形成主题） 发现问题 分析材料 找到确实证据 Think of a method Collect results Make up a question Find a problem Analyse the result Draw a conclusion Find supporting evidence John Snow defeats “King Cholera” A brief introduction of cholera Broad Street It begins in the stomach and a severe case can lead to death without immediate treatment. 5oo deaths in 10 days in 1854 in London. Spread from one person to another. So it is