2023学年完整公开课版Book2U3ComputersPeriod1

ENGLISHBook2U3Computers目录period1Contents1Period22Period33Period445Period501Period1TotalkaboutcomputersandknowaboutthehistoryofcomputersGetstudentstothinkabouttheadvantagesanddisadvantagesofcomputersTrytoimprovestudents’readingability教学目标Guess“whothepersonis”accordingtotheinformationgiven.Thereisamanwhomakesuslearntheworldathome.Hemakesmostpeopleusehissoftwareandwecankeepintouchwitheachotherwhereverweare.Hesetsuphisowncompany“Microsoft”.Hemakesmostpeopleintheworldusethecomputer.Step1教学过程Step2Warmingup1Reviewsomebasicwordsrelatedtothetopic”computer”.2“Whatdoyouknowaboutcomputers?”Guess”whoamI？“accordingtothepictures.(abacus,calculator,hugecomputer,PC,laptop,PDA,androbot)3

Predictthecontentaccordingtothetimeandfindthekeywordaboutthepassage.(thehistoryofcomputers)Ifyouwanttoknowmoreaboutcomputers,openthebooktoP18andreadthetext“WhoAmI?”教学过程skimming1.whoisthespeaker?acomputer2.Inwhatorderisthispassagearranged(安排）?inorderoftime.Step3教学过程Step3scanningChoosethemainideaofthispassage.AThecomputerwantstofind“whoheis”.B.Thefunction(功能)ofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryandtheapplicationsofthecomputer.教学过程Step4Thetopicsentenceofeachparagraph教学过程Para1.OvertimeIhavebeenchangedalot.Para2.Thosechangesonlybecamepossibleasmemoryimproved.Para3.Since1970smanynewapplicationshavebeenfoundoutforme.T:Howdidyoufindthetopicsentenceofeachparagraph?Step4Thetopicsentenceofeachparagraph教学过程oneexample:(Para3)ThesupportingdetailsofthetopicsentenceWhatarethenewapplicationsofthecomputer?Teacherguidesstudentstoconclude:Summary:Atopicsentencesetsoutthemainideaofaparagraph.Atopicsentenceisusuallythefirstorlastsentenceofaparagraph,sometimesitalsoappearsinthemiddleofaparagraph,especiallyinscientificpassageStep5Whatcanyouinferfromthetext?教学过程A.Thecomputerhasartificialintelligence.B.Thecomputerchangesalotovertheyears.C.Thecomputerwasnotconnectedbyanetworkuntilintheearly1960s.D.Nowthecomputercanonlybeusedtodealwithinformation教学过程Step6InformalDiscussionWhatareadvantagesanddisadvantagesofcomputers?whicharemore?Advantages:ourlifehaschangedinschoolwork,games,emails,music,films,communication,information,photos,shopping,etc.Step6教学过程Disadvantages:

1.Badforoureyesandhealth2.Awasteoftimeandmoney3.Makepeopleisolatefromtheirfriends4.SomepeopleespeciallytheteenagersareaddictedtothecomputergamesandchattingontheInternet.Asaresult,theyhavelittletimetostudy.5.Somepeopleusethecomputerwrongly.……InformalDiscussion教学过程Step7InformalDiscussion.What’sthecomputerinstudents’mind?Havethemthinkitoverandexpressthemselvesclearlytotheclass.Whataretheadvantagesanddisadvantage