写一写许多伟大的发明和发现都离不开细心的观察。鲁班观察带齿的草叶,发明了锯子;牛顿观察落地的苹果,发现了地球有吸引力;瓦特观察水烧开后的壶盖,发明了蒸汽机……古今中外还有不少这样的故事,你还能说说或写写吗?
联系课文,解释词语。1.弥漫:_____________________________________________________2.搜索:_____________________________________________________3.交口称赞:_________________________________________________
写几句话夸夸那个非洲少年。_____________________________________________________________________
写出关于友谊的名人名言。1._________________________________________________2._________________________________________________3._________________________________________________4._________________________________________________
联系课文,解释词语。1.激流:____________________________________________2.处境:____________________________________________3.交易:____________________________________________4.犹豫:____________________________________________
课文回放。列文虎克玩( ),做成( );列文虎克又玩( ),做成( );后来,列文虎克玩出了大名堂,最早发现了( )。从列文虎克的身上,你受到了什么启发?和同学们交流一下吧!____________________________________________________________________