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1、二年级数学导学提纲第一单元课题“统一长度单位”请小朋友们准备好 8个一角硬币，6个回形针，学生尺一把。摆一摆看数学书的短边大约有（ ）个一角硬币那么长；摆一摆看数学书的短边大约有（ ）个回形针那么长。你有什么发现吗？课题：认识厘米，用厘米量看一看你的尺子，并介绍一下上面有些什么？找一找与尺子上一大格一样长的东西。（ ）和（ ）与1大格一样长。课题“认识米，用米量”（1）昨天学过的长度单位是（ ），量物体的长度可以用（ ）作工具。（2）用两个手指比一比1厘米有多长？（ ）（ ）和（ ）大约长1厘米。请用文具尺量一量你的床铺的长度，在量的时候有什么发现？第二单元课题：两位数加两位数（不进位）说说看
2、17+2= 3+15= 11+8= 的计算方法。试试看17+20= 你会算吗？与（1）中有什么不同？课题：两位数加两位数（进位）竖式计算24+35= 16+23= 52+17=（2）46是由（ ）个十和（ ）个一组成的，25是由（ ）个十和（ ）一组成的。（3）试试看 46+25=（ ）你发现与（1）中有什么不同？课题：两位数减两位数（不退位）看书第16页中的主题图，说说从什么地方可以看出北京赢了？图上还了解到什么信息？说说看172= 198= 155= 的计算方法。试试看 5720=（ ）说说与（3）中有什么不同？课题：两位数减两位数（退位）（1）说说看137= 和168= 的计算方法。（2
3、）试试看4317=（ ）与（1）中有什么不同？QcWA3PtGZ7R4I30kA1DkaGhn3XtKknBYCUDxqA7FHYi2CHhI92tgKQcWA3PtGshLs50cLmTWN60eo8Wgqv7XAv2OHUm32WGeaUwYDIAWGMeR4I30kA1DkaGhn3XtKknBYCUDxqA7FHYi2CHhI92tgKQcWA3PtGZ7R4I30kA1DkaGtgKQcWA3P tGZ7R4I30kA1DkaGhn3XtKknBYCUDxqA7FHYi2CHhI92tgKQcWA3PtGshLs50cLmTWN60eo8Wgqv7XAv2OHUm32WGeaUwYD
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