Unit 1 Science and Scientists Reading and Thinking 课件- 高二上学期英语人教版（2019）选择性必修第二册.pptx

,Unit 1 Great Scientists(Reading),授课人：,Do you know the scientists?,Archimedes,Charles Darwin,TuYouyou,Gregor Mendel,Leonardo da Vinci,Marie Curie,Thomas Edison,Zhang Heng,Zhong Nanshan,scientist,The order of a scientific research,1.Draw a conclusion 2.Think of a method 3.Collect data 4.Make a question 5.Find a problem 6.Analyse the results 7.Find supporting evidence,Do you know how to prove a new idea in scientific research? Discuss in small groups the stages in setting out a new scientific idea. What order would you put them in?,scientist,By the end of the class, students will be able.1.to know about John Snow and cholera. 2.to master some reading skills , such as skimming and scanning . 3.to summarize the main idea and retell the stages for John Snows research.4.tolearnfromthegreatscientistsanddevelopthenoblespirits.,Teaching Objectives,scientist,The text,What will be talked about from the title?,John Snow Defeats “King Cholera”,Who ?,How ?,What ?,scientist,Para1:,Cholera was a deadly disease and people had no idea about its cause or its cure .,Find a problem,John Snow Defeats “King Cholera”,Cholerausedtobeoneofthemostfeareddiseasesintheworld, untilaBritishdoctor,JohnSnow,showedhowitcouldbeovercome. Thisillnesscausesseverediarrhoea,dehydration, andeven death. Intheearly19thcentury,whenan outbreakofcholerahitEurope,millionsofpeoplediedfromthedisease.Asayoungdoctor,JohnSnowbecamefrustratedbecausenooneknewhowtopreventortreatcholera.Intime,herosetobecomeafamousDoctor, andevenattendedtoQueenVictoriawhenshegavebirth.However,heneverlosthisdesiretodestroycholeraonceandforall.,scientist,Para2:,Ask a question,John Snow Defeats “King Cholera”,Ingeneral,doctorsinthosedayshadtwocontradictorytheoriestoexplainhowcholeraspread.Onetheorywasthatbadaircausedthedisease.Theotherwasthatcholerawascausedbyaninfectionfromgermsinfoodorwater.Snowsubscribedtothesecondtheory.Itwascorrect,buthestillneededproof.Consequently,whenanoutbreakofcholerahitLondonin1854,Snowbegantoinvestigate.Hediscoveredthatintwoparticularstreetsthecholeraoutbreakwassoseverethatmorethan500peoplediedintendays.Hewasdeterminedtofindoutwhy.,Topic:doctorsinthosedayshadtwocontradictorytheoriestoexplainhowcholeraspread.,scientist,Para2:,The two theories,Cholera was caused by an _from _ in _ .,How did cholera kill people?,Ask a question,John Snow Defeats “King Cholera”,_ caused the disease.,Bad air,infection,germs,food or water,scientist,Find out the information about 1854; 2; 500; 10.,1854: Another cholera outbreak hit London.2; 500; 10: In 2 particular streets, more than 500 people died in 10 days.,What did John Snow do?,He was determined to _,John Snow Defeats “King Cholera”,find out why.,scientist,Para3:,John Snow marked information on a map to find out where people died or did not die.,Think of a method & Collect data,John Snow Defeats “King Cholera”,Broad Street,37,40,38,16,20,9,8,21,Many deaths happened here.,No death happened here.,Public house,It seemed that the water from the pump was to blame.,Anayse the results,scientist,John Snow Defeats “King Cholera”,Read the para3 and answer.,Find supporting evidence,Draw a conclusion,Pump water carried the virus.,Two deaths,In another part of London,A woman and her daughter,Died of cholera because of drinking the water delivered from the pump,Remove the handle of the pump,The disease slowing down,scientist,John Snow Defeats “King Cholera”,1. What caused the out break of cholera in London in 1854?,The water which came from the River Thames and had been infected by waste.,Para. 4,The truth was that the water from the Broad Street pump had been infected by waste. .Some companies sold water from the River Thames that was polluted by raw waste.,2. Was cholera destroyed completely？,Through Snows tireless efforts, water companies. .However, cholera is still a problem. Each year, millions of people around the world get cholera and many die from it.,Para. 5,No.,scientist,John Snow Defeats “King Cholera”,scientist,The right order of a scientific research,Find a problem,Make a question,Think of a method,Collect results,Analyse the results,Find supporting evidence,Draw a conclusion,John Snow Defeats “King Cholera”,scientist,Group-working,Read the whole passage again and talk about the question in groups.,To set out a new scientific idea through a scientific research, what qualities do you think are the three most important ones that the researcher should be equipped with? And give your reasons in brief.,hard-working lazy patient edgy(急躁的) sympathetic wise devoted selfish honest reliable calm stubborn generous responsible meticulous(缜密的) handsome careful determined,In order not to get infected with disease, what should we pay attention to in our daily life?,Thought expressing,Wear mask,Avoid gathering,Wash hands,Do sports,Assignment,According to seven steps of scientific research, work in group to make a presentation about how did our country fight against the COVID-19.,Thank you!,