m7u1Welcometotheunit市公开课一等奖省赛课微课金奖课件

Livingwithtechnology

Unit1Welcometotheunit1/17Tolookatthefourdifferentelectricalandelectronicdevices(P1)anddiscusshowthesedeviceshavechangedourlives2/17Manythingshavebeeninventedinthehistoryofmankindandmoreandmorethingsaretobeinvented.Technologyhasseensomedevelopmentsinthelastfewdecades.Whatelectricalandelectronicappliances(电器)doyouhaveathome?Lead-in3/17Whichdoyouthinkisthemostuseful?4/17Electronicshavedevelopedveryquicklyinthelastdecades.Doyouthinkthesethingshavemadeourlivesmoreconvenientorhavetheymadesimplethingsmorecomplicated?5/17What’syouropinionontheseproducts?

6/17●Theyareinventedtomeetpeople’sneeds.●Theyhaveimprovedpeople’slivestosomedegree.●Theyaredevelopingveryquickly.●Theradiationfromsomeoftheelectricalorelectronicdevices,suchasmobilephones,maybeharmfultopeople’shealth.●Whenpeoplebuynewelectricalorelectronicdevices,theythrowawaytheoldones.Thismaygeneratealargeamountofwaste,whichisharmfultotheenvironment.7/17Picture1:ComparetheTVinthepicturewiththeTVinyourhome.1.antennae(天线)ontop2.asmallscreen3.onlyblackandwhitepictures4.noremotecontrol8/17DevelopmentofTVblack-and-whiteTVcolourTVLCDscreen液晶显示器9/17Picture2:Howdidpeoplerecordmusicinthepast?Putthetapesintotherecorderinthepast.Peopleneedtorecordmusicnow:Acomputer,anMP3player,amobilephoneandsomerecordingsoftware.10/17gramophone(留声机)radio/taperecorderMP3playerCDplayerDevelopmentofaudio(音响)devices11/17Picture3:Howdoyoulookupawordinapaperdictionary?Wekeyinthewordwewanttolookupandclickthebutton‘Enter’.Thenthewordentrywillappearonthescreen.Howdoyoulookupawordinanelectronicdictionary?12/17Developmentofdictionariespaperdictionaryelectronicdictionary13/17Picture4:Howdidpeoplekeepintouchinthepast?---byletter/telegraph/telephoneHowdopeoplekeepintouchnow?---mostlybymobilephone14/17Developmentofcommunicationletter/telegramtelephonecellphone15/17Developmentofcamerasmobilephonewithacameradigitalcameratraditionalcamera16/17MicrowaveovensRefrigeratorsTVsetsAirconditionersWashin