人教版高中英语必修2第三单元公开课课件

computersWangWeicomputersWangWei1Step1VocabularypresentationPre-readingStep1VocabularypresentationP2abacus/ˈæbəkəs/Mygrandpaplaysthe

verywell,butIcannotplaytheabacusatall.abacusabacus/ˈæbəkəs/Mygrandpaplay3calculator/ˈkælkjʊleɪtə/ThisisaCASIOelectronic

.calculatorcalculator/ˈkælkjʊleɪtə/Thisi4hugecomputerlaptopPChugecomputerlaptopPC5PDArobot/ˈrəʊbɒt/PDArobot/ˈrəʊbɒt/6?What’snext?tomaketheseintellectualmachineshavefeelings…?What’snext?tomaketheseint7Step2PredictionTask1Lookatthepicturesandthetitleofthereadingpassage.Predictwhatitisgoingtobeabout.Step2PredictionTask1Lookat8Task2Lookattheseinventions.Puttheminorderaccordingtothetimewhentheyappeared.Afterreadingthepassage,checktoseeifyouwereright.( )analyticalmachine ( )laptop( )calculatingmachine ( )robot( )PC ( )universalmachine214563Task2Lookattheseinvention9Step1Skimforthemainidea

While-readingThedevelopmentofcomputers.Step1Skimforthemainidea W10Step2ScanfordetailsParagraph1Paragraph2Paragraph3TopicsentenceOvertimeIhavebeenchangedquitealot.Thesechangesonlybecamepossibleasmymemoryimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.SupportingdetailscalculatingmachineanalyticalmachineuniversalmachinePCtubestransistorssmallchipscommunicationsfinancetraderobotsmobilephonesMedicaloperationsspacerocketStep2ScanfordetailsParagrap11Step3Makeatimeline1642:

1822:TheanalyticalmachinewasmadebyCharlesBabbage.

:

1940s:

:Thefirstfamilyofcomputerswasconnectedtoeachother.1970s:

Now:

CalculatingmachinewasmadeinFrance.CalculatingmachinewasmadeinFrance.19361960Hugecomputersweremade.Manynewapplicationshavebeenfound.Itwillbemoreandmoreadvancedtoprovidehumanswithalifeofhighquality.Step3Makeatimeline1642: 12Brainstormalistofthingsthatyou,yourschoolandyourfamilyusecomputersfor.Thinkabutwhatyouwouldhavetodoifyoucouldnotusecomputersanymore.Post-readingTaskDiscussionQuestion:howcomputershavechangedourlives?TipsBrainstormalistof