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找规律

苏教版四年级数学上册. 找规律. 夹子. 手帕. 两端物体是( ),中间物体是( )。. 篱笆. 木桩. 两端物体是( ),中间物体是( )。. 验证我们的发现!. 那是不是一一间隔排列的两种事物,都存在这样的规律呢?. 摆摆看. 任意拿几根小棒和圆片,在桌子上摆成一排,再在每两根小棒中间摆一个圆。数数小棒的根数和圆的个数,你有什么发现吗?. 小棒和圆片是间隔排列的,并且两端都是小棒,小棒的根数比圆片的个数多 1 。. 每两根小棒中间摆一个圆片. 6.

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找规律

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  1. 苏教版四年级数学上册 找规律

  2. 夹子 手帕 两端物体是( ),中间物体是( )。

  3. 篱笆 木桩 两端物体是( ),中间物体是( )。

  4. 验证我们的发现! 那是不是一一间隔排列的两种事物,都存在这样的规律呢?

  5. 摆摆看 任意拿几根小棒和圆片,在桌子上摆成一排,再在每两根小棒中间摆一个圆。数数小棒的根数和圆的个数,你有什么发现吗? 小棒和圆片是间隔排列的,并且两端都是小棒,小棒的根数比圆片的个数多1。

  6. 每两根小棒中间摆一个圆片 6 25 9 20

  7. 两端物体 两端物体 中间物体 马路一边有25根电线杆,每两根电线杆中间有一个广告牌。一共有多少个广告牌? 25-1=24(个) 如果有25个广告牌,那又会有多少根电线杆呢? 25+1=26(个)

  8. 2(1)把一根木料锯3次,能锯成多少段? 3+1=4(段) (2)如果锯成6段,需要锯几次? 6-1=5(次)

  9. 想一想: 你还能找到有这样规律的事情吗?小组内互相说一说。

  10. 欣赏:生活中的一一间隔

  11. 75-1=74(棵)

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