必修5unit1reading 精品课件

2. Why did John Snow use a map in his research? A. It could help him find exactly how many people died of cholera. B. It could help him find the source of drinking water for people. C. It could help him organize his ideas and find evidence. D. It could help him find his way in Broad Street.
• Who put forward a theory about black holes?
Qualities of great scientist
聪明的 勇敢的 勤奋的 谦虚的 自信的 友好的 有创造力的 慷慨的，大方的 可信赖的
Scientific
method 7 3
4
2 1 5 6
draw a conclusion
right but he needed evidence _______. So he began his
Stage Think of John Snow _________ suspected the second theory was
3
a
method
enquiry __________.
Stage 4&5
Scientific
method 7 3
4
2 1 5 6
draw a conclusion
think of a method collect results
make a question
find a problem
Please put the in right order!
analyse the results Find supporting evidence
think of a method collect results
make a question
find a problem
Please put the in right order!
analyse the results Find supporting evidence
What do you know about cholera?
Can you use this scientific method to solve a case?
B
A C
一个报刊老板从20多层坠落，当场死亡。经初步推断，是 他杀。嫌疑人有3人，一名是版面设计，一名是摄影师， 一名是编辑。此时现场聚集很多人，3人皆到了现场，轻 便衣装，只都带了手机。警方随后上各家调查不在场证明。 版面设计的人家里开着空调，咖啡还是冒着白气。摄影师 带警方看了看杯中还有啤酒泡的啤酒。编辑带着警方看了 还在冒着火星的烟。三人家都在3楼，且都刚参加完同一 场葬礼。经测试，若上楼刺杀老板至少需要5分多钟，三 人都在第一时间出现在现场(意思为凶手作案后并未回家)， 且在现场都呆了7分。而热气，啤酒泡，火星熄灭皆最多 10分左右消失。三人都很恨死者。问:是谁杀了报刊老总?
Polluted water ◆ 9. _______________
carried the virus. ◆ All the water supplies
examined should be 10. _________.
I. Number these events in the order that they happened. ___ 2 John Snow began to test two theories. ___ 1 An outbreak of cholera hit London in 1854. ___ 4 John Snow marked the deaths on a map.
3. Why was cholera called “King Cholera” in the text? A. Because it caused many deaths. B. Because it got its name from Queen Victoria. C. Because it was defeated with the help of the King. D. Because it was the most deadly disease of its day.
GREAT SCIENTISTS
• Who used peas to show how physical characteristics are passed from parents to their children?
ห้องสมุดไป่ตู้
DO YOU KNOW THESE SCIENTISTS?
• Who discovered radium?
multiplied in the air ◆ Theory one: Cholera 3. ___________ and floated around until it found its victims. ◆ Theory two: When people 4. ___________ absorbed cholera into _____ their bodies with meals, their bodies were attacked.
I. Choose the best answer. 1. We know from the text that John Snow ______. A. had collected information before cholera broke out B. felt not quite sure after he finished the map C. helped the woman from Broad Street D. became famous after defeating cholera
___ 7 He announced that the water carried the disease. ___ 3 John Snow investigated two streets where the outbreak was very severe. ___ 8 King Cholera was defeated. ___ 5 He found that most of the deaths were near a water pump. ___ 6 He had the handle removed from the water pump.
Stage Find a A large number of people died of cholera, but 1 problem neither its 1. cause _______ nor its 2. cure _____ was understood.
Stage Make a 2 questio n
Cholera is the illness caused by a bacterium called
Varian cholera. If infects people’s intestines(肠胃),
causing diarrhea(腹泻), vomiting(呕吐) and leg
cramps (小腿抽筋).
stage6:What is his supporting evidence evidence? extra evidence: A woman and her daughter who
lived far away but drank the water also died.
Stage 7 Draw a conclusion
He found that… Many told deaths happened here. So he the astonished people that… No death happened here.
Work place
The water from the pump was to blame.