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大班数学活动《图形之间的关系》数学领域教案

  • 2026-04-07 06:09:42
大班数学活动《图形之间的关系》数学领域教案

数学活动《图形之间的关系》

班级:大班

领域:数学

活动目标:

1.将三角形、正方形、长方形等常见图形通过分割、组合的方式变

出不同数量的各种图形,发现图形之间的关系。

2.能创造性运用各种图形组合物体形象并点数图形的数量。

3.大胆动手操作,体验图形分割、组合的乐趣。

活动重点:

将常见图形通过分割、组合的方式变出不同数量的各种图形,发现图形

之间的关系。

活动难点:

能创造性运用各种图形组合物体形象并点数图形的数量。

活动准备:

1.课件《小熊披萨店》。

2.学具:三角形、圆形、正方形、长方形折纸若干、剪刀人手一把;

大拼图 15 块;磁性七巧板人手一套。

3、手机、黑板。

活动过程:

一、参观“小熊披萨店”,初步观察并发现生活中的图形组合。

1、出示课件《小熊披萨店》,引导幼儿观察并发现生活中的图形组

合。

提问:小熊披萨店里都有什么东西?是由什么图形组成的?

2、请幼儿找一找生活中(现场)有哪些物品也藏着图形组合。

小结:生活中有很多东西是由各种图形组成的,给我们不一样的感

觉。

二、帮助“小熊分披萨”,探索图形之间分割和组合的关系。

1、创设问题情境,引发幼儿参与活动的愿望。

提问:小熊披萨店的披萨出炉了,看看有什么形状的?小动物们闻

到香味儿也赶来了,可小熊做的不够分,咱们帮帮小熊,把一块披萨分

成两份,看看能变出什么形状的披萨?

2、幼儿第一次操作并交流,初步探索图形的分割组合。

(1)提问:你的披萨是什么形状的?变成了什么形状的披萨?

(2)请个别幼儿拿着自己分割的披萨介绍。

小结:同样一个 XX 形大披萨,分一下,能变出两块不同形状的小披

萨。

(3)幼儿尝试组合操作。提问:能把披萨再变回原来的形状吗?试试

看!

3、幼儿第二次分割操作并交流,进一步理解图形的分割组合。

(1)提问:把你的两块披萨再各分一次,看看一共变成了几个什么形

状的披萨?

(2)选择几名幼儿介绍,重点介绍不同的分法。

(3)幼儿再次组合操作。提问:披萨变成了这么多份,能快速变回原

来的形状吗?

小结:原来一个大披萨可以分成不同数量、不同形状的小披萨,分割

后的小披萨组合起来还能变回到原来的大披萨。

三、帮助“小熊铺地砖”,尝试运用各种图形组合长方形。

1、介绍游戏情境,讲解游戏玩法。

小熊还想把披萨店铺上漂亮的地砖呢,我们再来帮助小熊把地砖找

到合适的位置铺好,组成一面长方形的大地砖。

2、提供三组不同形状、不同拼法的“地砖”,请幼儿与组内同伴互

相交流拼摆,帮助小熊完成“铺地砖”。

3、幼儿分组交流操作结果,集体分析纠错。

要求:检查一下每个小组拼得对不对?哪里有问题?可以怎样拼?

四、送给“小熊的礼物”,创造性运用各种图形组合物体形象。

1、创设游戏情境,引导幼儿进行创意组合。

小熊的披萨店还需要一些漂亮的装饰画,咱们再来帮帮小熊。

2、幼儿运用七巧板创造性拼摆各种物体形象,感受图形组合的有趣。

3、幼儿介绍自己的作品,同伴分享经验。

提问:谁来说说你拼的是什么?用的几个什么图形?

4、幼儿展示作品,体验成功的喜悦。

延伸活动:

请幼儿自由创作图形拼贴画,看谁的画更有创意。

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  1. CONNECT:[ UseTime:0.001031s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001483s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.016319s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005613s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001657s ]
  6. SELECT * FROM `set` [ RunTime:0.000812s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001532s ]
  8. SELECT * FROM `article` WHERE `id` = 488927 LIMIT 1 [ RunTime:0.001621s ]
  9. UPDATE `article` SET `lasttime` = 1775582893 WHERE `id` = 488927 [ RunTime:0.035211s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.014161s ]
  11. SELECT * FROM `article` WHERE `id` < 488927 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.014603s ]
  12. SELECT * FROM `article` WHERE `id` > 488927 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005476s ]
  13. SELECT * FROM `article` WHERE `id` < 488927 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.085685s ]
  14. SELECT * FROM `article` WHERE `id` < 488927 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000990s ]
  15. SELECT * FROM `article` WHERE `id` < 488927 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.012894s ]
0.323547s