高中英语《unit4 astronomy the science of the stars》教案（6）新人教版必修3

《高中英语《unit4 astronomy the science of the stars》教案（6）新人教版必修3》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、TheSixthperiodUsingLanguageTeachinggoals教学目标1.Abilitygoals能力目标PracticeSs’sabiltyoflisteningandreading2.Learningabilitygoals学能目标EnableSstogetknowledgeofgreatscientistsandscienceTeachingimportantpoints教学重点a.thethreescientists’differentideasandtheresultoftheirworkb.theexperienceofLiYaping’svisitto

2、themoonTeachingdifficultpoints教学难点Understandthelisteningtext.Teachingaids教具准备Arecorder,acomputerandaprojector.Teachingprocedures&ways教学过程与方式StepILeadinT:Wehavelearntalotaboutastronomy,haveyougotinterestedinit?Ifyouaregoingtostudyastronomy,whatproblemwillyoufacemost?S2:Gravity.T:Whatisgravity?S3

3、:Everythingwillfallbacktotheearthifitisdroppedorthrownaway.Thepulloftheearthiscalledgravity.T:Quiteright.Whofirstgottheideaofgravity?S4:IsaacNewton.T:Howdidhegettheidea?S5:Onedayhewassittingunderthetree.Hesawanapplefall,whichmadehimgettheidea.BesidesNewton,arethereanyotherscientistswhomadeagrea

4、tcontributiontotheideaofgravity?S6:AlbertEinstein,StephenHawking.T:Howdideachofthemthinkofgravity?Ordidtheysharethesameideaofgravity?Comeon,thetapewilltellyou.StepIIListening1.Listentothetapeandchoosethebestmainideaofthelisteningpassage(Ex.2P30).Mainidea:AThetextisabouthowthreescientistswantedt

5、ofindoutaboutthebeginningoftheuniverse.BThetextisabouthowtheideaofgravityhasdevelopedoveralongperiodoftime.CThetextisabouttheimportanceofthreescientistsandtheirworkThebestanswer:SummaryBiscorrectbecauseitgivesaclearideaofwhatthelisteningpassageisabout.ListentothetapeagainandfillinthechartinEx.3

6、onP30.IsaacNewtonAlbertEinsteinStephenHawkingIdeaLargebodieshaveaforcewhichpullsthingstowardsthem.Inspacelargeobjectsmakespaceandtimebend;thelargertheobject,thefurtherspaceandtimebend.Blackholeshaveaverylargemassandpullthingstowardsthem.DevelopmentThebiggertheobjectthestrongerthegravity.Timegoe

7、sslowerinverystronggravity.Ifyougoovertheedge,youcannotgetout;butifyoudonot,youmaybeabletoescape.(Note:Astronomersandscientiststhinkthatablackholeisaregionofspace(notathing)intowhichmatterhasfallenandfromwhichnothingcanescape—note