Unit 1 Great Scientists warming up and reading

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名称 Unit 1 Great Scientists warming up and reading
格式 rar
文件大小 1.9MB
资源类型 教案
版本资源 人教版(新课程标准)
科目 英语
更新时间 2008-09-09 20:31:00

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课件26张PPT。Let Science Change Our WorldScientists:Alexander Bell electricity
Thomas Edison the First telephone
Wright Brothers the electric Lamp
Madame Curie black holes in Universe
Franklin Theory of Gravity
Steven Hawking the First Plane
Elbert Einstein Radium
Isaac Newton the Theory of RelativityScientists & Contributions:Do you know?1. Who discovered that objects in water are lifted up by a force that helps them float?ArchimedesAncient Greek
(287-212BC)A mathematicianCharles Darwin2. Who wrote a book explaining how animals and plants developed as the environment changed?the Origin of Species“father of modern biology”Do you know?3. Who invented the first steam engine? Thomas Newcomen, British (1663--1729) He improved the first steam pump built by Thomas Savery in 1698 and turned it into a steam engine for taking water out of mines in 1712. James Watt improved it still further in the 1770sDo you know?Gregor Mendel, Czech (1822- 1884) He grew pea plants and developed ideas on heredity(遗传学) and inherited (继承,承传) characteristics. Between1856-- 1863 he grew 28,000 pea plants.4. Who used peas to show how physical characteristics are passed from parents to their children?Do you know?5. Who discovered radium?
6.Who 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?Maries CurieThomas EdisonLeonardo da VinciDo you know? Sir Humphry Davy, British (1778- 1829) He did research into different gases and discovered the medicinal value of nitrous(含氮的) oxide(氧化物) (or laughing gas) as an anaesthetic (麻醉剂). In 1815 he developed a safety lamp for miners. 8. Who invented a lamp to keep miners safe underground?Do you know? Zhang Heng, Chinese (78- 139) He invented the first seismograph(测震 仪、地震仪) to indicate in the direction of an earthquake. It was in the shape of a cylinder(圆筒形) with eight dragonheads round the top, each with a ball in its mouth. 9. Who invented the earliest instrument to tell people where earthquakes happened?seismographDo you know?10. Who put forward a theory about black holes?Stephen HawkingDo you know? Do you know John Snow? a famous doctor in London. What happened to them? It infects people’s intestines(肠道), causing
diarrhoea(腹泻), vomiting(呕吐) and
dehydration(脱水)
Many deaths in African countries in 2005
and even now
5oo deaths in 10 days in 1854 in London.
Let’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage: John Snow Defeats “King Cholera”Draw a conclusion(得出结论)
Think of a method(找出研究方法)
Collect results(收集材料)
Make up a question(形成研究主题)
Find a problem(发现问题)
Analyse results(分析材料)
Find supporting evidence(找出支持观点的证据) John Snow Defeats “King Cholera”Steps of a scientific researchdraw a conclusionfind a problemmake up a questionthink of a methodcollect resultsanalyse the results find supporting evidenceMatch themPara 1Para 2Para 3Para 4Para 5Para 6 Para 7 draw a conclusionfind a problemmake up a questionthink of a methodcollect resultsanalyse the results find supporting evidencePara 1Para 2Para 3Para 4Para 5Para 6 para 7 What is the problem?Cholera was the most ______ disease
of its day. Neither its ______ nor its _______
was understood. So many terrified people died every time there was an outbreak.What caused cholera?Step 1 : find a problem deadlycausecureHow to solve the problem?
How to control cholera?What is the question?Which theory is correct?Step 2 : make a question theory 1theory 2Cholera multiplied in the air & floated aroundPeople absorbed the disease into their body with their meals.What is the best method?Collect date/
Gather informationStep 3 : think of a method When: ______________
Where: ___________________ Deaths: _____________1854500P./ 10D.two particular streetsAn outbreak hit LondonStep 4 : collect results Broad StreetMany deaths happened here.No death happened here.The water from the pump was to blame.What happened to the pump water?Cholera was spread by _________ not in a cloud of _______.Step 5 : analyse the results Look into the _______ of the water for these two streets.
source: ________ water
measures: _________ the handle
result: the disease ________ _______. sourcepollutedremovegermsgasslowed downWhat extra evidence did he find?Step 6 : find supporting evidence two other deaths A woman and her daughter
who lived far away but drank
the water also died of cholera.draw a conclusion with certaintyThe polluted water
carried the disease.What is his suggestion?Step 7 : draw a conclusion He suggested that the source of all the water supplies should be ___________.
He instructed the water companies not to _______ people to polluted water. examined“King Cholera” was defeated exposeComprehending
Ex.1 P3keys: 2 1 4 7 3 8 5 6What should we pay attention to in our daily
life in order not to get infected with cholera? Heal the food left overnightCook raw food thoroughlyWash hands oftenKeep away from flieschoose fresh sea foodKeep the kitchen cleanDispose rubbish properly.Drink boiled waterdiscussion