一年级数学上册第5单元6_10的认识和加减法《6和7》课件新人教版.ppt

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6和7,情景创设,有几只青蛙?,现在一共有多少只青蛙?,情景创设,新知学习,4 + 2 =,6,2 + 4 = 6,新知学习,6 2 =,4,新知学习,6分成两种颜色,有几种分法?,6,5,1,6,4,2,6,3,3,6,2,4,6,1,5,新知学习,能列多少道算式?,新知学习,摆一摆,1+6=7,2+5=7,3+4=7,新知学习,7个 分成两堆,有几种分法?,7,6,1,7,5,2,7,2,5,7,4,3,7,3,4,7,6,1,知识拓展,6像哨子吹又响,知识拓展,7像镰刀割青草,知识应用,5后面的数是几?6后面的数是几?7前面的数是几?,拓展练习,6,5,7,0,1,2,3,4,试一试,?,拓展练习,拓展练习,1.从左数第7缸有( )条鱼;,5,2.从左数有6条鱼的是第( )缸;,4,3.从左数第6缸有( )条鱼。,7,拓展练习,找规律,填一填。,4,3 1,5,2 3,6,4,7,3,2,4,2 5,7,2,拓展练习,从左起第6个星星是什么颜色的?,总结,通过本节课的学习,同学们知道6和7的组成了吗?,

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