astronomy_thescienceofthestars学案3

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1、第三册第四单元第一课时阅读导学案Book3Unit4Astronomy:thescienceofthestarsWarmingUp&ReadingLearningGoals:1.Arousestudents’interesttosearchforthemysteryofspace.2.DevelopSs’readingability.StepI:LeadinTask1:GooverwordsaboutnamesofsubjectandscientistsinthesefieldsHey.Doyoulike...Doyouwanttobean/a...bi

2、ology(生物学)biologist(生物学家)chemistrychemist(化学家)Physicsphysicist(物理学家)geography（地质学）geologist(地质学家）musicmusicianpolitics(政治)politician(政治家)astronomy(天文学)astronomer(天文学家）Task2:Talkaboutsomethingaboutastronomy.Hereisthepictureofthesolarsystem.Canyoulocate(定位)theeightplanetsinthepictu

3、re?UranusVenusEarthMarsMercuryJupiterNeptuneSaturnsolarsystemTheyare:、、、、、、、、ResearchinclassReadthetextbookinPage25“Howlifebeginonearth”.Step2Thinking&Discussing(1)Scanandpredict.Whatisthepassageabout?Itisabouthowontheearth.(2)SkimandfindthemainideaofeachparagraphPara.1Thearrival

4、ofhumansandtheirimpactontheearth.Para.2Thedevelopmentofplantsandanimalsontheearth.Para.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Theformation(形成)oftheearth.Para.5Theimportanceofwaterforlife.(2)Carefulreading:readthetextcarefully,thenfillinthechatof“Howlifebeganon

5、theearth”1smallplantsinwaterwww.ziyuanku.comwater32shellfishandallsortsoffish64511.human10.7reptiles(onland)89Step3Discussingandpresentingyouranswerstoyourgroupmats.Step4TestingTrue(T)orFalse(F).1.TheearthappearedbeforetheBigBanghappened.2.Theoriginalatmosphereconsistedofnitrogen

6、andoxygen.3.Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth.4.Lifebeganinwaterandthenonland.5.Mammalsappearedbeforethedevelopmentofdinosaurs.6.Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7.Humanbeingsproducetoomuchcarbondioxidewh

7、ichcausestheglobalwarmingontheearth.8.Accordingtothetext,humanbeingswoulddisappearintheend.Readingcomprehension1.Howwerestarsandotherbodiescreated?A.Atomscombinedtocreatethem.BCloudsofdustcombinedtocreatethem.C.Watercombinedtocreatethem.D.Gasescombinedtocreatethem.2.Whichisthemos

8、timportantforlifeappearingontheearth?A.F