unit1greatscientists
warmingup,pre-readingandreading
1.teachingaims
①getsstoimprovetheirreadingabilities.
②letssknowthetopic“greatscientists”
③knowsomeimportantphrasesoccurringinthisreading
2.teachingprocedures
step1leadin
checkss’knowledgeaboutsomescientistsandtheirdiscoveries.
①whodiscoveredthatobjectsinwaterareliftedupbyaforcethathelpsthemfloat?
archimedes
②whowroteabookexplaininghowanimalsandplantsdevelopedastheenvironmentchanged?
charlesdarwin
③whoinventedthefirststeamengine?
thomasnewcomen
④whousedpeastoshowhowphysicalcharacteristicsarepassedformparentstotheirchildren?
gregormendel
⑤whodiscoveredradium?
mariescurie
⑥whoinventedthewayofgivingelectricitytoeverybodyinlargecities?
thomasedison
⑦whowasthepainterthatstudieddeadbodiestoimprovehispaintingofpeople?
leonardodavinci
⑧whoinventedalamptokeepminersafeunderground?
sirhumphreydavy
⑨whoinventedtheearliestinstrumenttotellpeoplewhereearthquakeshappened?
zhangheng
⑩whoputforwardatheoryaboutblackholes?
stephenhawking
afterallthequestions,thenleadinthepassagewithapicture.askssiftheyknowthemapandwhatitisusedfor.givethemtheanswerlater“itisamaptofindoutthecauseofcholera.”
step2skimandscan
morequestionsaregiventogetthegeneralideasofthispassageandsomeobviousfacts.
whodefeats“kingcholera“?johnsnow
whathappenedin1854? choleraoutbreakhitlondon.
howmanypeoplediedin10days?500
whyistherenodeathatno.20and21broadstreetaswellasatno.8and9cambridgestreet?
thesefamilieshadnotdrunkthewaterfromthebroadstreetpump.
step3readingfordetails
1whycouldn’tthecholerabeundercontrolatfirst?
neitheritscause,notitscurewasunderstood.
2whichtheorydidjohnsnowbelievein?
peopleabsorbedcholeraintotheirbodieswiththeirmeals.
3johnsnowfinallyprovedthetheoryhebelievedby________.
gatheringinformationwiththehelpofamap
lookingintothesourceofthewaterforbroadstreetandcambridgestreet
separatingthosewhosufferedcholerafromthosewhodidn’t
bothaandb(rightchoice)
4topreventthecholerafromspreadingagain,whatdidjohnsnowdo?
suggestedthatthesourceofallwatersuppliesbeexamine.suggestedthatnewmethodsofdealingwithpollutedwaterbefound.instructedthewatercompaniesnottoexposepeopletothepollutedwateranymore.共
step4mindmapofthepassage
paragraph1:introductionofjohnsnowandcholera
paragraph2:twotheory
paragraph3-5:studyofthebreakoutin1854
paragraph3:thinkofamethod:testtwotheory
collecttheresult:markthedeath
analyzetheresult:reasonfordeathandnodeath
paragraph4:analyzetheresult:findtheresourceofthewater
paragraph5:repeatifnecessary:findmoreevidence.
drawaconclusion:cholerawasspreadbygerm
pollutedwatercarriedcholera
paragraph6:preventionofcholera
step5retellthepassage
providesswithasummarywithsomeblanks.letthemretellthepassageaswellaspayattentiontosomeimportantwords.
readthepassageagainandfillintheblanks:
johnsnowwasawell-known____inlondoninthe___century.hewantedtofindthe______ofcholerainorderto______it.in1854whenacholera____out,hebegantogatherinformation.he_____onamapwhereallthedeadpeoplehadlivedandhefoundthatmanypeoplewhohaddrunkthedirtywaterfromthe______died.sohedecidedthatthepollutedwatercarriedcholera.hesuggestedthatthe_____ofallwatersupplybe_______andnewmethodsof________withpollutedwaterbefound.finally,“kingcholera”wasdefeated.
step6homework
readthewholepassageandretell.
gotothenettogetmoreinformationaboutuk.
共