单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2020/12/12,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2020/12/12,#,Unit 1,SCIENCE AND SCIENTISTS,1,Unit 11,2,2,To,obtain and know John Snow and cholera.,To get to know some reading strategies.,To,summari,z,e the,main idea,and retell the stages for John Snows research.,To talk about science and scientists.,3,To obtain and know John Snow a,Talk about some scientific achievements you know.,4,Talk about some scientific ach,Chinas,Mars,probe(,探,测,器,)Tianwen-1,successfully carried out its first,orbital(,轨道,的,)correction,Sunday,morning.,The,probe continued,to head for Mars.All the systems of the probe were in good condition.China launched its first Mars mission Tianwen-1,which means,“Questions,to Heaven,”,on July 23,marking the,countrys,first step in planetary exploration of the solar system,.,5,Chinas Mars probe(探测器)Tianw,There are some great scientific achievements that have changed the world.Can you name some of them?,What do you know about great scientists?,6,There are some great scientifi,Who discovered that objects in water are,lifted up by a force that helps them float?,Archimedes(287-212 BCE),an ancient Greek mathematician&physicist,7,Who discovered that objects in,Archimedes principle,阿基米德定律,(,浮力,),Give me a place to stand,and I shall move the world.,If you put an object into water,the water pushes the object up.It rises and partly floats.The force of the water pushing it up is the same as the weight of the object.,8,Archimedes principleGive me a,Who wrote a book explaining how animals and plants developed as the environment changed?,The Origin of Species,Charles Darwin(1808-1882),British author,It explains how plants and animals changed over time to fit in with a changing environment.,9,Who wrote a book explaining ho,Who discovered radium?,She was the first woman to win the Nobel Prize,the first person and only woman to win twice.,Marie Curie(1867-1934),Polish and French,10,Who discovered radium?She was,Who was the painter that studied dead bodies to improve his painting of people?,Leonardo da Vinci(1452-1519),Italian artist,masterpieces,11,Who was the painter that studi,Who invented the earliest instrument to tell people where earthquakes happened?,invented the first seismograph(,地动仪,),Zhang Heng(78-139),Chinese,12,Who invented the earliest inst,Who put forward a theory about black holes?,worked on astronomy and studied black holes in space,Stephen Hawking(1942-2018)British scientist,He has shown that black holes do not only absorb everything around them but,from time to time,throw out matter as well.,13,Who put forward a theory about,Who discovered artemisinin(,青蒿素,)?,Tu Youyou,She is the first Chinese Nobel laureate in physiology or medicine and the first female citizen of China to receive a Nobel Prize in any category,as well as the first Chinese person to receive the Lasker Award.,(,拉斯克医学奖,极具,声,望的生物医学奖项,),14,Who discovered artemisinin(青蒿,_ analyze the results,_ ask a question,_ draw a conclusion,_ collect data,_ find a problem,_ find supporting evidence,_ think of a method,Discuss the following stages of scientific research in groups.What order would you put them in?,5,Understand the questioning mind,2,7,4,1,6,3,15,_ analyze the results Di,n,.,腹泻,What do you know about infectious diseases?What do you know about,cholera,?,Cholera is the illness caused by a bacterium(,细菌,)called Vibrio cholerae.,It,infect,s peoples intestines(,肠,),causing,diarrhea,vomiting(,呕吐,)and leg cramps(,腿抽筋,).People even die quickly from a loss of liquid.,n,.,霍乱,vt.,使感染,;,传染,16,n.腹泻What do you know about in,Seven cholera pandemics,(,霍乱大流行,),have,occurred in the past 200,years.Lets take the third cholera pandemic,(,18521860)as an example to see its“power”.,Place,Deaths,Russia,one million,1858-1860,Tokyo,Japan,100,000 200,000,1854,Chicago,3,500,18531854,London,10,739,18541855,Spain,over 236,000,Mexico,200,000,Because of some scientists great efforts,now the cholera is not as serious as that time.,17,Seven cholera pandemics(霍乱大流行,Read the passage quickly and choose the main idea.,John Snow was a well-known doctor in London.,The cause of Cholera was polluted water.,The source of all drinking water should be examined.,How John Snow collected,analyzed data and found the cause of the disease and solved it.,18,Read the passage quickly and c,Use the stages in examining a new scientific idea to describe each paragraph.,draw a conclusion,find a problem,ask a question,collect data,find supporting evidence,What causes cholera?,Which theory is correct?,Mark information on a map to find out where people died or did not die.,Find other evidence to confirm,the,conclusion.,The water is to,blame,.The source of all drinking water should be examined so that it is safe.,v.,指责,19,Use the stages in examining a,Read the passage again and complete the chart below.,It was believed that cholera was caused by bad _ or,germ,s in