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1、Unit4Exploringplants-Writing课件LookatthepicturesinExercise1andguesstheanswerstothequestions:Whatmaterialsarebeingusedinthisexperiment?Whatdoyouthinkthepurposeoftheexperimentis?Whatorderdoyouthinkthepicturesshouldgoin?ListeningonP79Numberthepicturesintheorderyouhearabo
2、utthem.23154Listentothefirstpartagainandanswerthequestions.Whatisthepurposeoftheexperiment?Tofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing.2.Arestudentsgoingtodotheexperimentingroupsorindividually?Ingroups.3.Wherearethematerialsthatthestudentsneed
3、tosetuptheexperiment?Onthebench.4.Whatmaterialsdothestudentsneedtosetuptheexperiment?Fourdishesandfourpiecesofcloth,adishofseeds,sometapwater,someboiledwaterandsomecookingoil.ThirdlisteningListentothefirstpartagainandcompletethetableofconditionsthateachdishofseedswas
4、given.ConditionsDishADishBDishCDishDtapwater,warmtemperature,oxygentapwater,coldtemperature,oxygennowater,warmtemperature,oxygenboiledwater,oil,warmtemperature,nooxygenFourthlisteningNowlistentothesecondpartofthetapeinwhichtheclassdiscussestheresultsoftheexperiment.C
5、ompletethetableofresults.Didtheseedsgrow?ReasonswhyorwhynotDishADishBYesBecausetheyhadwater,warmthandoxygen.NoBecauseitwastoocold.Didtheseedsgrow?ReasonswhyorwhynotDishCDishDNoNoBecausetheywerewateredwithboiledwaterwhichhasnooxygen.Also,theywerecoveredwithoilwhichpre
6、ventedoxygengettingtotheseeds.Becausetheydidn’tgetanywater.Listentothesecondpartofthetapeagainanddiscussthequestion:Whatwastheconclusionoftheexperiment?Seedsneedwarmth,waterandoxygentogrow.AnexperimentonplantsPart1:Listentoateacher(TH)helpingherclasssetupanexperiment
7、.TH:OK,everybody,thismorningwe’regoingtodoanexperimenttofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing.LISTENINGTEXTThematerialsareallonthebench.Choosesomeonefromyourgrouptogoandgetfourdishesandfourpiecesofcloth,adishofseeds,sometapwater,someboiled
8、waterandsomecookingoil.Lookattheinstructionsontheboard.Let’sreadthroughthem.One:Putthepiecesofclothonthedishesandspreadtheseedsonth
