2017春一年级数学上册 第三单元 数墙课件1 沪教版五四制.ppt

数墙,,,9,1,2,7,,,,5,6,,4,8,,,,,,,1,0,15,12,13,11,,,,,1,2,2,3,4,7,3,5,6,8,11,19,数墙里隐藏了什么秘密？,1,2,2,3,4,7,3,5,6,8,11,19,1,2,3,2,,,,,4,,,7,3,5,8,,,,,,,6,11,19,数墙里隐藏了什么秘密？,1,2,2,3,4,7,3,5,6,8,11,19,,,,,,,,,,数墙里隐藏了什么秘密？,2,11,5,4,8,7,6,9,3,10,12,16,20,2,6,1,7,1,10,1,7,16,20,6,8,11,12,4,2,9,3,6,2,7,5,1,2,3,1,5,4,7,补数墙,12,5,11,6,10,4,3,13,17,15,18,1,20,8,,9,16,2,4,1,6,补数墙,7,12,9,6,10,17,4,16,3,13,1,20,,,5,15,11,8,18,,2,,7,5,补数墙,7,12,5,11,9,4,3,13,17,15,16,10,6,1,8,20,10,18,1,2,3,4,ok,×,×,×,√,4,1,6,5,7,13,12,,×,,√,20,9,10,11,,×,10,7,2,3,1,2,3,17,16,9,5,4,,×,补数墙,你行吗？,2,2,,,,5,,2,,,10,5,3,0,1,1,补数墙,你行吗？,2,,,16,11,,,2,1,,5,3,1,8,6,补数墙,你行吗？,,,,,,,6,18,7,12,5,1,猜一猜：,,12,,5,2,,,5,猜一猜：,2,5,,0,5,,7,,3,,1,游戏：一起来造数墙！,,1,,2,,3,,0,,2,,5,,1,,1,,3,,8,,1,,2,,3,,6,,14,,0,,1,,3,,6,,12,,26,。