Unit12InnovationReadingClub课件-高二下学期英语北师大版选择性.pptx

U12Readingclub1;TeachingObjectives;Paper;Printing;Writingskills;TheCompass:OneofChinasFourGreatInventions

Thecompass,oneofChinasFourGreatInventions,wasfirstdevelopedduringtheHanDynasty(206BC–220AD),whichoriginallyconsistedofalodestone(天然磁石),alignedwith(与...一致)theEarthsmagneticfield.

Theinventionwasinspiredbytheneedforaccuratenavigation,especiallyformarineexplorationandtrade.EarlyChinesescholarsstudiedthepropertiesofmagnetism(磁石的性质)andrefined(改善)thedesign,eventuallycreatingamorepreciseinstrument.Thisinnovationallowedsailorstodeterminedirectioneveninpoorweatheroratnight,significantlyimprovingtravelefficiency.

Thecompassrevolutionizedglobalexplorationandtrade.ItenabledChineseexplorerstonavigatevastdistances,contributingtotheSilkRoadsexpansion.Later,itspreadtootherpartsoftheworld,playingacrucialroleintheAgeofDiscovery.;指南针：中国四大发明之一

指南针是中国四大发明之一，最早是在汉代（公元前206年-公元220年）发明的，它最初是由一块与地球磁场对齐的磁石组成的。

这项发明的灵感来自于对精确导航的需求，特别是对海洋探险和贸易的需求。早期的中国学者研究了磁的特性，并改进了设计，最终创造了更精确的仪器。这项创新使水手即使在恶劣天气或夜间也能确定方向，大大提高了航行效率。

指南针彻底改变了全球探险和贸易。它使中国探险家得以远航，为丝绸之路的扩张做出了贡献。后来，它传播到世界其他地区，在大航海时代发挥了至关重要的作用。;Printing:OneofChinasFourGreatInventions

Printing,oneofChinasFourGreatInventions,waspioneeredduringtheTangDynasty(7thcentury).Later,BiShenginventedmovabletypeprintinginthe11thcentury,usingindividualclaycharactersthatcouldberearranged.

Theinventionwasinspiredbytheneedtoreproducetextsmoreefficiently,especiallyforspreadingknowledgeandliterature.Woodblockprintinginvolvedcarvingentirepagesintowoodenblocks,whilemovabletypeallowedforgreaterflexibilityandreuse,whichsignificantlyreducedthetimeandcostofproducingbooks.

Thisinventionmadeitmuchquickerandeasiertoreproducewrittenworkandleadtothefirstevermassproductionofbooksandliterature,improvingthepublic’sgeneral