高一英语（下）必修三unit 4 课时教案period 2

《高一英语（下）必修三unit 4 课时教案period 2》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Period2Usinglanguage$ReadingtaskStep1.LeadinT:Wehavelearntalotaboutastronomy,haveyougotinterestedinit?Ifyouaregoingtostudyastronomy,whatproblemwillyoufacemost?S2:Gravity.T:Whatisgravity?S3:Everythingwillfallbacktotheearthifitisdroppedorthrownaway.Thepulloftheearthis

2、calledgravity.T:Quiteright.Whofirstgottheideaofgravity?S4:IsaacNewton.T:Howdidhegettheidea?S5:Onedayhewassittingunderthetree.Hesawanapplefall,whichmadehimgettheidea.BesidesNewton,arethereanyotherscientistswhomadeagreatcontributiontotheideaofgravity?S6:AlbertEinstein

3、,StephenHawking.T:Howdideachofthemthinkofgravity?Ordidtheysharethesameideaofgravity?Comeon,thetapewilltellyou.Step2Listening1.Listentothetapeandchoosethebestmainideaofthelisteningpassage(Ex.2P30).Mainidea:①Iheardabouthowthreemenmademistakeswhentheytriedtodescribegra

4、vity.②Iheardabouthowthreemenwantedtofindoutaboutthebeginningoftheuniverse.③Iheardabouthowtheideaofgravityhasdevelopedoveralongperiodoftime.④Iheardaboutthreescientistsandtheirwork.Thebestanswer:③2.ListentothetapeagainandfillinthechartinEx.1onP30.IsaacNewtonAlbertEins

5、teinStephenHawkingDates1642-17271879-19551942-IdeaEverythingisaffectedbyaforcecalledgravityGravityisconnectedtotimeandspace“Blackholes”“eat”objectsbutalso“spit”themoutOtherinformationItwasonlyabouttheearthItwasabouttheuniverseItwasaboutthingsfoundintheuniversecalled

6、“blackholes”(Note:Astronomersandscientiststhinkthatablackholeisaregionofspace(notathing)intowhichmatterhasfallenandfromwhichnothingcanescape—notevenlight.Sowecan’tseeablackhole.Ablackholeexertsastronggravitationalpullandyetithasnomatter.Itisonlyspace-orsowethink.)St

7、ep3.Reading1.Fastreading单位：湖北省荆门　姓名：李国　E_mail：liguo619@sina.comT:AllthethreegreatscientistsNewton,EinsteinandHawkingplayedanimportantroleinthedevelopmentofideasofgravity.Wouldyouliketoknowmoreaboutgravity?Ss:Yes.T:Isthemoon’sgravitythesameasthatoftheearth?S1:No.T:Re

8、adfasttoseehowmanytimeswouldtheforceofgravitychange?S2:Three.2.CarefulreadingT:Whatarethethreetimes?Howwouldtheforceofgravitychange?Andhow