Unit5Lesson25Let'sDoanExperimentLesson!课件冀教版（2012）九年级英语全册

Unit5LookintoScienceLesson25

Let’sDoanExperiment!experimentjarupsidepourcorrectscientificmethodraincoatforcepressureconcluden.实验；试验n.

广口瓶；罐子n.

上部；上边v.

倒出；倾倒adj.

正确的；恰当的adj.

科学的n.

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;断定;推断出experimentjarupsidepourcorrectscientificmethodraincoatforcepressureconcluden.实验；试验n.

广口瓶；罐子n.

上部；上边v.

倒出；倾倒adj.

正确的；恰当的adj.

科学的n.

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;断定;推断出1.做实验让我们做个实验吧。2.颠倒着，倒转着，乱七八糟把……翻过来,倒过来正面朝上把……从……拿开然后我把广口瓶向下翻转过来，并且把手从纸板处拿走。3.涌出，倾诉你认为水会溢出来。为某人倒某物4.正确的，恰当的adj.→adv.让我们检验一下哪个理论正确。5.科学的adj.→科学家n.→科学n.科学方法6.……的力量空气的力量使水保存在广口瓶里。被迫做某事强迫某人做某事7.气压8.得出结论，推断v.→n.结论1.do/make/carryoutanexperimentLet’sdo/make/carryoutanexperiment.2.upsidedown

turn…upsidedownrightsideuptake…off…(takeoff脱掉，飞机起飞)ThenIturnthejarupsidedownandtakemyhandoffthecardboard.3.pouroutYouthinkthewaterwillpourout.poursthforsb=poursbsth4.correct→correctlyLet’stestwhichtheoryiscorrect.5.scientific→scientist→science

scientificmethod6.theforceof

Theforceoftheairkeepsthewaterinthejar.

beforcedtodosth/bemadetodosthforcesbtodosth=forcesbintodoingsth7.theairpressure8.conclude→conclusionsciencescientistinstrumentlaboratoryuniversedoingexperimentphysical

phenomenonWhatwordscanyouthinkofthatrelatedtoscience?1.Tolistenandunderstandtheexperiment2.Tolearntoexplaintheexperiment3.TolearnsomeusefulwordsandexpressionsObjectivesWords:

correctmethodforceexperimentpourscientificpressureconcludePhrases:turn…upsidedownpour…outscientificmethodtake…offPatterns:That’scalledthescientificmethod.Readthelessonandanswerthequestions.WheredoesDannythinktheyshoulddotheexperiment?2.Whatkeepsthewaterinthejar?3.IsJennysureofhertheory?Howdoyouknow?4.WhydoesDannyputonhisraincoat?5.WhatdoesDannyconclude?Dannythinksthattheyshoulddotheexperimentoutside.Theforceoftheair./Theairpressure.Yes,sheis.SheissosureofhertheorythatBriancandotheexperimentoverDanny’sheadandhewon’tgetwet.Becausehethinkshewillgetwet.Airisstrongerthanhethought.Readtheexperiment.Putthesentencesinthecorrectorder.Putapieceofcardboardoverthejar.Thejarofwaterisupsidedown,butthewaterstaysinthejar.Thisisbecauseairpressurepushesthecardboardontothejar.Filltheglassjarwithwater.Turntheglassjaroverquickly.Holdyourhandonthecardboardforafewseconds.Removeyourhandfromunderneaththejar.Whathappens?Thereismoreairoutsidethejarthaninside,sothereismoreairpressureoutsidethaninside.251346Languagepoints1.我装满了一瓶水。2.我用一张纸板盖在瓶口处并放在那儿。3.你们猜会发生什么？4.我认为纸板会托住水。我认为地板会变湿。5.那怎么可能呢？6.它有足够的力量托住水。7.那么我们发现了什么？我们发现气压有助于纸板托住广口瓶里的水。帮助某人做某事在某方面帮助某人在某人的帮助之下忍不住，情不自禁做某事随便吃……帮助某人解决困难，摆脱困境8.我推断出空气比我想象的要强壮的多。1.Ifilledthejarwithwater.2.Icoverthetopwithapieceofcardboardandholditthere.3.Canyouguesswhatwillhappen?4.Ithinkthecardboardwillholdthewater.Ithinkthefloorwillgetwet.5.Howisthatpossible?6.Itisstrongenoughtoholdthewater.7.Sowhathavewediscovered?Wehavediscoveredthattheairpressurehelpsthecardboardholdthewaterinthejar.

helpsb(to)dosthhelpsbwithsthwithone’shelp=withthehelpofsbcan’thelpdoingsthhelponeselftosthhelpsbout8.IconcludethattheairisstrongerthanIthought.接龙幻灯片上单词、中文或图片出现时，同学应迅速反映出其对应的中英文。每人一词，按行/列依次接龙，3秒内说不出，此行/列同学即失去此答题机会，下一行/列同学接续。upside正确的，恰当的方法；办法forcescientific得出结论；断定；推断出Trytodotheexperimentinthislessonyourself.(Workingroupsofthreeandrecordtheprocessusingthescientificmethod.)Tasktips:Whathappenswhenyouuselesswater,morewater,wetcardboard,ordifferentkindsandsizesofjars?TheScientificMethodWorksheetQuestion:Whatistheproblemyouwanttoexplore?Askaclear,specificandtestablequestion._________________________________________Theory:Makeapredictionoryourbestguessaboutthesolutiontoorresultofyourquestion._________________________________________Procedure:Planthematerialsyouwillneedandthestepsyouwilltaketotestyourtheory.Materials:(list)Steps:_________________2.___________________3._________________4.____________________Results/Conclusions:Recordtheresultsofyourexperiment.Wasyourtheorycorrect?_________________________________________DosomepracticeⅠ.根据汉语提示完成句子。1.The

_______

answer

is

apparent.2.My

_______(方法)for

studying

English

differs

from

yours

completely.3.Thebandisstillaninnovative______(力量)inmusic.4.Maybe

they

feel

toomuch

________(压力)

todo

well

ontheir

tests.

5.What

canwe

________(得出结论)

from

theconversation?

correctmethodforcepressureconclude1.The

(正确的)answerscanbefoundonthenextpage.2.Tonywantstodoan

(实验)totesthistheory.3.Youcan’t

(迫使)otherstodowhattheyhate.4.Ithinkthisisthebest

(方法)tosolvetheproblem.5.Betty,you’dbettertakeyour

(雨衣).Theweathermansaiditwouldrainthisafternoon.correct 2.experiment 3.force4.method 5.raincoatbesureofscientificmethodturnovertake…offfill…with…6.She

thetape,andsawabeautifulpictureontheotherside.7.Please

yourcoat

andhangitonthewall.8.Canyouhelpme

thebottle

theapplejuice?9.Youshoulduse

toloseweight.10.She

passingtheexam,becauseshehaspreparedforitformorethanamonth.6.turnedover7.take;off 8.fill;with 9.scientificmethods10.issureof 11.