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幼儿园教师纸从哪里来_科学_中班_教案+PPT课件备课图片

  • 2026-04-08 05:00:02
幼儿园教师纸从哪里来_科学_中班_教案+PPT课件备课图片

纸从哪里来

中班科学&社会

活动目标

l萌发爱惜纸张、保护树木的情感

l了解纸由树木制成,认识常见纸及纸制品。

l运用感官探究纸张,并能用语言大胆表达自己的发现。

活动重难点

l重点:理解纸是由树木加工制成的。

l难点:建立“节约用纸”与“保护树木”之间的联系。

活动准备

l课件准备:《纸从哪里来》PPT。

l材料准备:面巾纸、卡纸、A4纸、牛皮纸、瓦楞纸、皱纹纸等、塑料袋。

活动过程

一、神秘盲袋:盲袋摸纸,导入活动。

——今天,老师带来了一个神秘袋,里面藏着几位我们每天都会见面的好朋友。它们会是谁呢?

——我们需要请几位小朋友,不用小眼睛看,只用小手仔细摸,把摸到的感觉告诉大家,我们一起来猜一猜!

小结:原来,我们的好朋友是各种各样的纸!它们摸起来都不一样。纸在我们的生活中无处不在。

二、纸的发现:认识常见的纸及纸制品。

1.发放不同的纸,引导幼儿认识各种各样的纸及其作用。

——现在老师把纸张发给大家,请小朋友们像小小科学家一样,仔细看一看、摸一摸,感受一下这些纸有什么不同?

——这些纸可以用来做什么呢?(擦脸、做手工、画画……)

小结:原来纸和小朋友一样,各有各的本领!软软的面巾纸可以用来擦脸、擦手;硬硬的卡纸可以做手工;瓦楞纸可以折成纸盒装东西;平平的打印纸可以让我们画画……

Ø活动建议:教师可提前按小组准备多种不同材质的纸张,确保每位幼儿都能亲手触摸、观察,充分感受不同纸张的质地与手感差异。

2.出示组图“纸制品”,引导幼儿了解常见的纸制品。

——小朋友们刚刚摸到了各种各样的纸,那大家知道生活中有哪些东西是纸做的吗?

小结:原来,从我们学习用的书本,到喝水用的纸杯,再到保护物品的纸箱,甚至过节时漂亮的装饰,都离不开纸。纸真是我们生活中非常重要的小帮手,给我们的生活带来了许许多多的便利!

三、纸的由来:了解纸是由树木加工制成的。

1.播放故事音频,引导幼儿初步了解纸是由树木加工制成的。

——这些形状、用处各不相同的纸,它们却有一个共同的“妈妈”。你们猜猜,这个伟大的妈妈会是谁呢?

——它们的妈妈就是大树。大树妈妈是怎么变成这些有用的纸的呢?让我们一起来听一听。

2.引导幼儿回顾故事内容。

——纸的妈妈是谁?(大树)

——机器把大树变成了什么?(小木片)

——后来又把它煮成了什么软软的东西?(纸浆)

——湿湿的纸浆是怎么变成干干的、平平的纸的?(机器把它压平、烘干)

——做好的大纸卷又变成了我们生活中哪些东西?(书本、画纸、包装盒)

3.出示故事卡片,引导幼儿排序,进一步巩固了解纸的由来。

——请小朋友们按照正确的顺序排一排。

小结:原来,每一张纸都是大树妈妈经过漫长旅行、由工人叔叔辛苦劳动才得来的。我们节约用纸,就是在保护大树妈妈,让更多的大树能留在森林里。

四、节约用纸:萌发爱惜纸张、保护树木的情感。

——现在我们知道纸来得这么不容易,我们要怎么做来保护大树妈妈呢?

——在幼儿园里/家里可以怎么做?

小结:画画时,可以画满一张纸,反面也可以利用起来;做手工前,可以先去“宝贝纸箱”里找找有没有旧的纸可以用。上厕所时,需要多少拿多少,不浪费;阅读图书时,要轻轻翻书、不撕不折。在生活中也有一些方法,比如去超市用布袋、用可擦写的小黑板、旧报纸用来做手工等等。从今天起,希望我们每位小朋友都能成为真正的“节约用纸小卫士”,把我们的好办法用在每一天!

活动延伸

l日常活动

建议老师在班级内收集可二次利用纸张,并存放在固定位置,在做手工、画画前都可以引导孩子先去寻找可用纸张。

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  1. CONNECT:[ UseTime:0.001003s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001323s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000597s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000625s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001207s ]
  6. SELECT * FROM `set` [ RunTime:0.000482s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001395s ]
  8. SELECT * FROM `article` WHERE `id` = 486623 LIMIT 1 [ RunTime:0.001853s ]
  9. UPDATE `article` SET `lasttime` = 1775969041 WHERE `id` = 486623 [ RunTime:0.003385s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000690s ]
  11. SELECT * FROM `article` WHERE `id` < 486623 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000979s ]
  12. SELECT * FROM `article` WHERE `id` > 486623 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001760s ]
  13. SELECT * FROM `article` WHERE `id` < 486623 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001583s ]
  14. SELECT * FROM `article` WHERE `id` < 486623 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005838s ]
  15. SELECT * FROM `article` WHERE `id` < 486623 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002585s ]
0.160913s