探究式教学Module 3 Unit 2（外研）

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1、Module3Unit2Wehavenotfoundlifeonanyotherplanetsyet?本课时编写：合肥英伦教育学校阚娜老师WatchthevideoandtalkaboutwhatyouknowaboutChinesespaceships.Shenzhou-9isamannedspaceship.创设情境spacetravelScientiststhinkthattherehasbeenlifeontheEarthforhundredsofmillionsofyears.Howeve

2、r,wehavenotfoundlifeonanyotherplantsyet.Readthepassage启发思考TheEarthisaplantanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.Thesunanditsplanetsarecalledth

3、esolarsystem,andoursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.Scientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheir

4、lighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.ScientistshavesentspaceshiptotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.However,nospaceshiphastravelledfarenoughtoreachothersta

5、rsinourGalaxy.Putthewordsandexpressionsintheboxinorder:small–large.galaxy,planet,solarsystem,star,universe3213451.planet2.star3.solarsystem4.galaxy5.universe天体系统的层次月球地球地月系太阳系河外星系其他恒星系银河系总星系其他行星—卫星系TheMilkyWayGalaxy银河系主体部分的直径约为10万光年银河系银河系有太阳这样的恒星2000多亿颗

6、ThesolarsystemWhenyoureadapassagewithatitleandpictures,thinkaboutthewordsyoumayfindinthepassage,andthequestionsyoumaywanttoaskbeforeyoustarttoread.Learningtolearn2.Readthepassageandchoosethebesttitleforit.Anyoneoutthere?Lifeontheearth3.Thesunandotherst

7、ars4.Thestarsatnight________________________________Scientiststhinkthattherehasbeenlifeontheearthforhundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplanetsyet.1.Anyoneoutthere?1.Theearthisastar.□2.Thesunisastar.□3.Thereismorethanonegalaxy

8、intheuniverse.□4.Thelightfromthestarsinothergalaxieshastravelledforalongtimetoreachus.□5.Scientistshavereceivedmanymessagesfromspace.□6.Spaceshipshavevisitedmostoftheuniverse.□3.Check(√)thetruesentences.√√√自主或小组探究1.自主探究Languagepoints1.S