新人教版選修八 unit 3 inventors and inventions-warming up and reading[課件]

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1、人教新課標必修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