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ID:36105880
大小:2.42 MB
页数:41页
时间:2019-05-06
《新人教版选修八 unit 3 inventors and inventions-warming up and reading[课件]》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、人教新课标必修8Unit3InventorsandinventionsWarmingupandReadingIPeriod1&2WarmingupandReadingIUnit3InventorsandinventionsWarmingup:Ingroups,discusstheinventionsyouknowandthenmakealist.Warmingup-I(4m)Doyouknowwhattheseinventionsareandwhendidtheyhappen?Telephone1876television1923colourtelev
2、ision1940photocopier1937airconditioner1902electronicdigitalcomputer1942Atomicbomb1945Creditcards1950Penicillin1928Amongtheinventionsabove,whichinventiondoyouthinkisthemostimportantone?Why?Warmingup–II(2m)Whatisaninvention?AnInventionissomethingthatiscreatedbyahumanbeing.Inventin
3、gisascientificactivity.Warmingup-III(2m)Whatisadiscovery?Adiscoverymerelymakesknownsomethingthatalreadyexistedinnature.Lookatthepicturesbelowanddiscussinpairswhichpicturesshowinventionsandwhichshowdiscoveries.Pre-reading–I(4m)Anamphibiouscar(2003)Thisisthefirstcarthatcantravelsa
4、felyonwaterandonland.Whenmovingonwater,thewheelsofthecarturnsidewaysandmoveintothebody.Theunderneathofthecarisstrongenoughtosailasaboat.Itisaprototypeandisnotyetbeingproducedforsale.Thisisaninterestingmoderninvention.Stephenson’s“Rocket”(1781-1848)GeorgeStephensonwasoneofthefirs
5、tmentodesignenginesfortherailwayswhichwerenewatthattime.OneofthefirsttrackstobelaidwasbetweenStocktonandDarlington.Stephensonwasoneofthefirstrailwayengineersandin1825hedrovethefirsttrainalongtheline.ThestructureofDNAThiswasadiscoveryofFrancisCrickandJamesWatsonandpublishedin1953
6、.ThesetwoscientistswerethefirsttoshowthatourgenesconsistoftwospiralsofDNA(calledthedouble-helix).Thisworkleddirectlytothehumangenomeprojectin2003,whichdiscoveredtheStructureofDNA.Doyouknowthestageseveryinventormustgothroughbeforetheycanhavetheirinventionapproved?Inventingisascie
7、ntificactivityandsofollowssimilarstagestothoseusedinscientificresearch.Lookatthelistandworkoutasuitableorder.ApplyingforapatentFindingaproblemDoingresearchTestingthesolutionThinkingofacreativesolutionDecidingontheinventionPre-reading–II(3m)Thesuitableorder:FindingaproblemDoingre
8、searchThinkingofacreativesolutionTestingthesolu
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