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《高一英語（下）必修三unit 4 period 3-4 教案》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、Period3-4Usinglanguage$ReadingtaskStep1.LeadinT:Wehavelearntalotaboutastronomy,haveyougotinterestedinit?Ifyouaregoingtostudyastronomy,whatproblemwillyoufacemost?S2:Gravity.T:Whatisgravity?S3:Everythingwillfallbacktotheearthifitisdroppedorthrownaway.Thepulloftheearthiscal
2、ledgravity.T:Quiteright.Whofirstgottheideaofgravity?S4:IsaacNewton.T:Howdidhegettheidea?S5:Onedayhewassittingunderthetree.Hesawanapplefall,whichmadehimgettheidea.BesidesNewton,arethereanyotherscientistswhomadeagreatcontributiontotheideaofgravity?S6:AlbertEinstein,Stephen
3、Hawking.T:Howdideachofthemthinkofgravity?Ordidtheysharethesameideaofgravity?Comeon,thetapewilltellyou.Step2Listening1.Listentothetapeandchoosethebestmainideaofthelisteningpassage(Ex.2P30).Mainidea:①Iheardabouthowthreemenmademistakeswhentheytriedtodescribegravity.②Ihearda
4、bouthowthreemenwantedtofindoutaboutthebeginningoftheuniverse.③Iheardabouthowtheideaofgravityhasdevelopedoveralongperiodoftime.④Iheardaboutthreescientistsandtheirwork.Thebestanswer:③2.ListentothetapeagainandfillinthechartinEx.1onP30.IsaacNewtonAlbertEinsteinStephenHawking
5、Dates1642-17271879-19551942-IdeaEverythingisaffectedbyaforcecalledgravityGravityisconnectedtotimeandspace“Blackholes”“eat”objectsbutalso“spit”themoutOtherinformationItwasonlyabouttheearthItwasabouttheuniverseItwasaboutthingsfoundintheuniversecalled“blackholes”Step3.Readi
6、ng1.FastreadingT:AllthethreegreatscientistsNewton,EinsteinandHawkingplayedanimportantroleinthedevelopmentofideasofgravity.Wouldyouliketoknowmoreaboutgravity?Ss:Yes.T:Isthemoon’sgravitythesameasthatoftheearth?S1:No.T:Readfasttoseehowmanytimeswouldtheforceofgravitychange?單
7、位：湖北省荊門 姓名：李國 E_mail：liguo619@sina.comS2:Three.2.CarefulreadingT:Whatarethethreetimes?Howwouldtheforceofgravitychange?Andhowdidourweightchange?LeavetheearthVerystrongVeryheavyInspaceDisappearedFloatedweightlesslyOnthemoonVerylightThemasswillbeless3.SummaryT:Good!Iamsurey
8、oumustknowmoreaboutthegravity.Supposeyouareaskedtomakeasummaryaboutthetrip,willyoutry?Youonlyneedtofill
