Unit+2+Numbers+Reading 牛津深圳版英语八年级上册

Unit2NumbersReadingWhatdoweusenumbersfor?Step1Warm-upActivity1:Thinkabouttheusageofnumbers---Whatdoweusenumbersfor?---Weusethemtoexpress…datetemperaturetimeweightlengthamountofmoney23℃17.8WecanfindnumberseverywhereinourlifeActivity2:ShouldIagreewiththedeal(交易)?02.华罗庚Hi!I

amheretotakethe12-inch(寸)cakethatIbookedyesterday.Ipromisedtogiveittomysisterasaprize.I’mreallysorry.The12-inchcakeisoutofsale.CanIgiveyoutwo6-inchcakesinstead?Doublethenumberofcakesbutmakethemsmaller?Letmethinkaboutit…Warm-upShouldIagreewiththedeal(交易)?Warm-upV=πr²hIfthecakeis12-inch,thenrwillbe6.V1=π6²h=36πhIfthecakeis6-inch,thenrwillbe3.V2=π3²h=9πhV1=4V2Irealizeditwasnotagooddeal!ThekingandthericeAstoryaboutnumbers.Step2BeforeyoureadActivity1:Predict.1.Whataretheydoing?Theyareplayingchess.2.Whoarethey?Thekingandanoldman.3.Wheredidthestorymighthappen?InIndia.Step3:WhileyoureadActivity1:Dividethepassageintothreepartsandmatchthemainideawitheachpart.Para____:thebeginningPara____:themiddlePara____:theendingC.Thekingchallengedtheoldmantoachessgame.B.Thekingpromisedtogivetheoldmanthericehewantedifhewonthegame.A.Thekinglostthegame.Herealizedhedidn’thaveenoughricetogivetheoldman1.23.4.56Activity1:Readthepassageandfindmainideasofthreeparts.Para____:thebeginningPara____:themiddlePara____:theendingThekingchallengedtheoldmantoachessgame.Thekingpromisedtogivetheoldmanthericehewantedifhewonthegame.Thekinglostthegame.Herealizedhedidn’thaveenoughricetogivetheoldman1.23.4.56Wherethestorytookplace(1)________Whowasinthestorythekinganda(2)_____________Whathappenedinthestory?

ThebeginningThekingchallenged(3)_________________toagame.Thekingpromisedtogivehim(4)__________ifhewonthegame.ThemiddleTheyplayedthegamefor(5)____________.Theending(6)_____________wonthegame,butthekingdidnothave(7)____________togivehim.InIndiawiseoldmanthewiseoldmananyprizealongtimeTheoldmanenoughriceActivity2:Scanandcompletethechart.aThekinglostthegame.bThekingputonegrainonthefirstsquare,twoonthesecond,andsoon.cThekingandtheoldmanplayedthegameforalongtime.dThekingrealizedhewouldn’thaveenoughricetoputonallthesquares.cabdActivity3:Listenandputsentencesbelowintherightorder.Thekingandtheoldmanplayedthegameforalongtime.Finally,theoldmanwon.Sothekingorderedhismentocollectabagofrice.Heputonegrainonthefirstsquare,twoonthesecond,andsoon.Thekingquicklyrealizedtheproblem—evenwithallthericeinthecountry,hewouldstillnothaveenoughricetoputonallthesquares!Activity4:Findthesecretofnumber263grainsofrice9,223,372,036,854,775,808grainsofriceHowmanygrainsofriceshouldthekingputonthelastsquare?263grainsofrice200,000,000,000kgStep4:Afteryouread:FurtherthinkingPromisetheking’spromise:_______________________Theoldman’srequest:__________________________ResultThekingput___________“IfIwinthegame,I’dlike....“Youcanhaveanyprizeifyouwinthegame.”“onegrainonthefirstsquare....thekingquicklyrealized....Theoldmanrealizedhistrick.Whydidthekinglosethegame?Thepowerofnumber:Theruleofthepower(次方）Theoldmanwon.NumberTooconfident(自信)Ifyouweretheking,whatwouldyoudo?Discussion:WhatshouldIdo?Step4:Afteryouread:FurtherthinkingGroupworkWorkwithgroupmemberstodesign

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tofinishthestoryandactitout.MissFeng’s

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