高B9U2_课文理解导学案

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1、“自主互动”高效课堂三年级学科模块　编制人：丁罕冬审核人：　王芳Book9Unit2SailingtheOceans【学习目标】1.透彻理解课文，掌握文中的基础知识，培养快速阅读，整体理解的能力。2.弄清每个句子的结构和意思，合作探究文中出现的长难句子和语法现象。课前预习案【自主学习】------大胆试TaskI①Scanthetextandchoosethebestanswers.1.Whatisthemaintopicofthispassage?A.Thevoyagesofthetravele

2、rsbeforethe17thcenturyB.Howtoplotaship’spositiononamapC.HowdidancientmennavigatesowellD.Usenaturetoaidnavigation2.Howmanynavigationalinstrumentsarementionedinsearchoflongitudeandlatitude?A.4B.5C.6D.73.Whatdoestheword“random”in“Findinglatitude”standfor

3、?A.organizedB.intentionalC.arbitraryD.planned4.Withoutsecuremethodofmeasuringlongitudebeforethe17thcentury,theBritishsailorsreallyknew________.A.howtoestimatelongitudeusingspeedandtimeB.howtomeasurespeedinvolvedthrowingaknottedropeC.howtocounttheknots

4、asashipadvancedthroughthewaterD.whattododealwiththecompasstocalculatelongitude5.Wecaninferfromthepassage__________.A.Earliestseamenexploredtheoceanssincelatitudeandlongitudemadeitpossibletoplotaship’sposition.B.Earliestsailorsonlyusedcelestialbodies,t

5、heweather,andtidesandcurrentstonavigate.C.Thefirstseamenbegantousenavigationalinstrumentstofindlongitudeinsteadofusingnature.D.Inhistoryofsailingtheoceans,manmainlyusednaturetosailbeforenavigationalinstrumentsweremade.6.Ancientnavigatorsusenavigationa

6、linstrumentstohelpthem______A.findcelestialbodies.B.predicttheweather.C.explorethesea.D.findlatitude7.Theauthorofthepassageimpliesthattheancientnavigatorswere_______A.hard-workingB.brave.C.intelligent.D.energetic8.Accordingtothepassage,_______A.theanc

7、ientaccomplishednavigatorswereabletouseSouthStartoplottheirpositions．学法指导：第一步：学法指导：①快速浏览时，注意查看每段的中心句。一般情况下，中心句就是该段的中心意思。②采用扫描式阅读(scanning)，进行有选择有目的的阅读。目的是寻找某些资料和信息，对于无关的部分可以忽略。要注意总结题目类型（主旨归纳题细节题猜测词义推理判断题），然后根据不同类型采用不同的做题方法。务必在原文中划出关键句，标上题号。“自主互动”高效课堂三

8、年级学科模块　编制人：丁罕冬审核人：　王芳B.Seabirdscouldbeusedtoshowthewaytolandwhenitwasnowheretobeseen．C.Wiseseamenusedthesnowstodirecttheirsailing．D.Thesextantprovedtobethemostaccurateandreliableoftheseearlynavigationalinstruments．②SayTrueorFalseaccordingtothe