UNIT1 GREAT SCIENTIST高中课件下载.ppt

great scientists,m5 unit 1,xu minhua 14th nov,2011,about science,who discovered that objects in water are lifted up by a force that helps them float?,who wrote a book explaining how animals and plants developed as the environment changed?,archimedes,charles darwin,who invented the first steam engine?,thomas newcomen,who used peas to show how physical characteristics are passed from parents to their children?,gregor mendel,who discovered radium?,who invented the way of giving electricity to everybody in large cities?,who was the painter that studied dead bodies to improve his painting of people?,marie curie,thomas edison,leonardo da vinci,who invented a lamp to keep miner safe underground?,who invented the earliest instrument to tell people where earthquakes happened?,who put forward a theory about black holes?,sir humphrey davy,zhang heng,stephen hawking,put the 7 stages in right order.,pre-reading,john snow,defeats,“king cholera“,put the 7 stages in right order.,skimming,step1: what is the problem?(para1),the cholera was the most deadly disease of its day. neither its cause, nor its cure was understood.,what caused cholera?,detailed reading,step2: make a question: which theory is correct?,theory 1,theory 2,cholera multiplied in the air. a cloud of dangerous gas floated around until it found its victims.,people absorbed it with their meals.,step3: think of a method:,when another outbreak hit london, john snow began his _ and began to_.,enquiry(询问),gather information,step4: collect data from the map of broad street,broad street,many deaths happened here.,no death happened here.,the water from the pump was to blame.,pub,step5: analyze the results: what happened to the pump water?,the water was from the river which had been _by the dirty water from _.,polluted,london,remove the _ from the pump.,the disease _.,handle,slowed down,cholera was spread by _.,germs,step6: find supporting evidence: what extra evidence did he find?,a woman and her daughter who lived far away but drank the water also died.,the polluted water carried the virus.,step7: draw a conclusion,step1:problem,step2: question (theories),step3: method (enquiry/information),step4: collect data (map),step5: analyze result,step6: supporting evidence,step7: draw a conclusion,post-reading:,a summary,john snow wanted to find the cause of cholera in order to defeat it. he believed people got the disease after eating infected food. when another outbreak hit london, he began his enquiry and gather information. he marked the deaths on a map and found many people who had drunk the dirty water from the pump died. he found supporting evidence from two other deaths. so he concluded that the polluted water carried cholera. he suggested the sources of all water supply be examined and that the water companies supply people with clean drinking water. finally, cholera was defeated.,a famous doctor in london,defeated,“king cholera“,its the _ disease of its day.,deadly,cholera(霍乱) infects peoples intestines(肠道), causing diarrhoea (腹泻), vomiting (呕吐) and dehydration(脱水).,team work,an outbreak of cholera in tong xiang what should we do to prevent (or protect) ourselves from cholera?,forum,recommend (推荐) a spokesman (代言人) or spokeswoman-collect suggestions,team members-work in groups of four, discuss with each other, and report your suggestions to your spokesman or spokeswoman,work in teams,prevention comes first!,cure is a must!,lets do our best!,“boil it, cook it, peel it, or“,forget it !,heal the food left overnight,cook raw food th