Lesson25Let’sDoanExperiment!

Unit5,LookintoScience,1.Toreadandunderstandthedialogue2.Tolearntodotheexperimentbyyourselves3.Towritedownareportwithsomeusefulwordsandexpressions:correct,method,force,experiment,pour,scientific,pressure,conclude,turnupsidedown,pourout,scientificmethod,takeoff,Objectives,.Leading-in,（情境导入）,（友情提示：师友交流各抒己见）,Lesson25LetsDoanExperiment!,Inwhichsubjectdoyouoftendoexperiments?,krekt,knklu()n,santfk,med,kspermnt,InPhysicsorChemistryclasses,wecangetcorrectconclusionsbyusingscientificmethods.Doingexperimentisascientificmethod.,1.WheredoesDannythinktheyshoulddotheexperiment?2.Whatkeepsthewaterinthejar?3.IsJennysureofhertheory?Howdoyouknow?4.WhatdoesDannyconclude?,1.Dannythinksthattheyshoulddotheexperimentoutside.,2.Theforceoftheair./Theairpressure.,3.Yes,sheis.SheissosureofhertheorythatBriancandotheexperimentoverDannysheadandhewontgetwet.,4.Airisstrongerthanhethought.,Readthelessonandanswerthequestions.,（友情提示：师友先独立完成，再互助交流。）,II.Introduction,（实验准备）,Materials:,rightsideup,upsidedown,jar,cardboard,water,kdbd,d,psad,III.Procedure,（实验过程）,Whatwillhappen?,Lookandguess.,Thewaterwillpourout.Thewaterwillstayinthejar.,or,Turnthejarupsidedown.Coverthetopwithapieceofcardboardandholditthere.Takehandoffthecardboard.Fillajarwithwater.,2,1,3,4,Readtheexperiment.Putthesentencesinthecorrectorder.,（友情提示：师友先独立完成，再互助交流。）,Letsdotheexperiment!,（友情提示：学生说，老师做。）,（友情提示：学生说，学生做。）,Thewaterstaysinthejar.,.Conclusion,（实验结论）,1.Theforceoftheairkeepsthewaterinthejar.2.Wediscoveredthattheairpressurehelpsthecardboardholdthewaterinthejar.3.Weconcludethatairisstrongerthanwethought.,Whatdoyoulearnfromthisexperiment?,.Summary&Extension,（总结提高）,TheScientificMethodWorksheet,Name:_Material:_Procedure(过程):1.Fillajarwithwater.2.Coverthetopwithapieceofcardboardandholditthere.3.Turnthejarupsidedown.4.Takehandoffthecardboard.Results：Conclusions:_,Theforceoftheair/Theairpressure,ajar,apieceofcardboard,somewater,Thewaterstaysinthejar.,Theforceoftheairkeepsthewaterinthejar.,ExperimentReportTodaywedo