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Unit4AmazingScienceTopic1Whenwasitinvented?SectionAI.Teachingaimsanddemands:1.MastertheuseofthePassiveVoiceinthePast

Tense.2.Trytotalkaboutthematerial,theuseandtheproductionplaceandtimeofanobject.3.Gettoknowsomesciencetechnology.II.Teachingkeyp

ointsanddifficulties.Keypoints:Somesentences:What’sitmadeof/from?It’smadeof/from……What’situsedfor?It’susedfordoing…….Whenandwherewasit

invented?Itwasinvented………..Difficulties:1.ThePassiveVoiceinthePastTense:was/were+done2.Thedifferenceofsomephrase:bemadeof/fro

m/by/in/upintobeusedfordoing/todo/as……III.Teachingsteps:Step1.Revision1.ReviewthePassiveVoiceinthePresentTense.e.g.HespeaksEngli

sh.Englishisspokenbyhim.2.Showsomepictures.StudentstrytocompletethesentencewiththePassiveVoiceinthePresentTense.e.g.Manype

opleusecomputers.Computersareusedbymanypeople.Theworkersplanttreesinthegarden.Treesareplantedinthegard

enbytheworkers.3.Brainstorm.DosomeexercisetoreviewthePassiveVoiceinthePresentTense.Step2.Presentation.1.Showapictureofalock.

Presentthefollowingsentences.A;What’sthelockmadeof?B:It’smadeofmetal.A:What’situsedfor?B:It’susedforlockingdoors.St

udentstrytopracticeingroupsandtheninpairs.Showmorepictures,presentstheuseofbemadefrom.Trytomakethestudents

findoutthedifferenceofbemadeofandbemadefrom.2.Present:Whenandwherewasitinvented?Emphasizetheuseofwas/were+done.Step3.Practice.1.Student

strytoworkingroupoffour.Theytrytomakedialoguesaccordingtothepicturesin2a.2.Thenteacheraskssomegroupstopresenttheirdialoguesi

nthefrontoftheclassroom.3.Studentstrytosummarizesomephrase:beusedfor/to/by/asStep4.Consolidation.1.Teachershowamod

elrocket.Studentstrytotalkaboutthematerial,theuseandtheplaceandtimeofproduction.2.Listento1aandfinishthequestion:WhyisJaneunh

appy?3.Listenagainandfinish1b.Checktheanswers.4.Studentsread1aaloudandfinish1c.WhydidKangkangaskJanenottospendtoomuchtimeonthecomputergames?It’sb

adforhishealthifhespendtoomuchtimeonthecomputergames.Trytomakethestudentsrealizethedamageofplayingcomputergames.5.Listentothet

apeandnumberthepicturesin3a.Thenfinishthetablein3b.6.Workinpairs.Askandanswerquestionsbasedonthetablein3bwithPassiveVoice.

e.g.What’salaptopmadeof?What’situsedfor?Whenandwherewasitdeveloped?Step5.Project.1.Studenttrytosearch

someusefulinventionsandtalkaboutthembyusingthesentencestheyhavelearnedtoday.2.Makeatableofthem.Reporttheminthefronto

ftheclassroominthenextclass.3.Homework:ExerciseBook:SectionA