冀教九年级上16Lesson 25 Let's Do an Experiment.ppt

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1、Lesson25Unit5LookintoScience5UnitLesson25Let’sDoanExperiment！学习目标objectivesThenewwords:experiment,jar,upside,pour,correct,scientific,method,raincoat,force,pressure,concludeTounderstandthetheoryoftheexperiment.Tolearnactively.Wordsexperimentjarupsidepourcorrectscientificn.实验；试验n.广口瓶；罐子n.上部；上边v.倒出；

2、倾倒adj.正确的；恰当的adj.科学的Wordsmethodraincoatforcepressureconcluden.方法；办法n.雨衣n.力量v.迫使；强迫n.压力；压强；挤压v.得出结论；推断出LeadinDiscussDoyouliketodoexperiments?Whatexperimentshaveyoudone?Listentothetapeandanswerthefollowingquestions.1.What’sDanny’stheory?2.What’sJenny’stheory?Dannythinksthefloorwillgetwet.Jennythink

3、sthewaterwillstayinthejar.Pre-readingWhile-readingReadthelessonandanswerthequestions.1.WheredoesDannythinktheyshoulddotheexperiment?2.Whatkeepsthewaterinthejar?3.IsJennysureofhertheory?Howdoyouknow?Hethinkstheyshoulddoitoutside.Theforceoftheair.Yes,sheis.ShethinksthatBriancandotheexperimentoverDa

4、nny’shead.4.WhydoesDannyputonhisraincoat?5.WhatdoesDannyconclude?Hethinksthewaterwillpourout.Theairisstrongerthanhethought.Ifillajarwithwater.我用水把瓶子装满。fill…with…用…装满……Hehasfilledhiscasewithmanybooks.他已经把书装满了箱子。cover…with…用……盖住……LanguagePoints2.Iturnthejarupsidedown.我把广口瓶倒置。upsidedown“向下翻转过来”.Youh

5、oldthebookupsidedown.你把书拿倒了。rightsideup“正面朝上”besure+that从句表示“认为…一定…”而benotsure表示不确定.e.g.I’msureshewillcomehere.我确信她会来。I’mnotsurewhenhe’llcomehere.我不能肯定什么时候来这儿。I’msurethefloorwon’tgetwet.我确信地板不会湿。4.We’lldotheexperimentandobservedwhatwillhappen.我们将做这个实验并观察会发生什么情况。observed动词,“观察”。observesb.do/doings

6、th.e.g.Iobservedherdance.WhenIpassedbythegrass,Iobservedhimwalking.Fillintheblankwiththeproperword.Thefirstletterisgiven.1.Let’sdotheeandseewhathappens.2.A“t”isanideaandpredictswhatwillhappen.3.Wecanpwho’sright.4.Turnthejarudownandwecanseewhatwillhappen.5.“O”isanotherwayofsaying“watchcarefully”.x

7、perimentheoryrovepsidebserveLet’sdoaninterestingexperiment.First,I____ajar_____adesk,____it_____water,then_____thetop____apieceofcardboard.WhenI____thejar_____________,canyouguesswhatwillhappen?putonfillwithcoverwithtu