当前位置:首页>教案>中班科学优质课教案及教学反思《自制小电池》

中班科学优质课教案及教学反思《自制小电池》

  • 2026-06-23 16:48:21
中班科学优质课教案及教学反思《自制小电池》

活动目标

  一、通过实验操作自制小电池,使幼儿知道在盐水中灯泡能亮。

  二、培养幼儿的动手操作能力,体验实验成功的快乐。

活动准备

  一、每人一套:固定在塑料板上的碳棒、锌片一个;盛有水的烧杯一个带夹子的小灯泡及电铃一个,勺子一个。

  二、一号干电池一节,剥开的电池一个。

  三、每两人一杯盐。

活动过程

  一、出示小灯泡,引出电池。

  提问:小灯泡亮不亮?为什么能这样?

  二、以小故事形式介绍电池是怎么发明的。

  很久很久以前,有一位外国的科学家,名叫伏特,他特别喜欢做各种实验。有一次,他在做实验的时候,把两种金属放到化学药品中,结果奇怪的事情发生了,在这里产生了电,于是世界上的第一个电池就被发明出来了。

  伏特就成了发明电池的科学家。我们小朋友也爱动脑筋,喜欢做小实验,今天我们都来做一个小小科学家,自己来做一个小电池。

  三、做一个小小科学家,自制小电池。

  1.用剥开的电池,介绍碳棒、锌片

  2.教师示范制作小电池。把灯泡上的两个夹子,分别夹在锌片和碳棒上,放进有水的烧杯中,灯泡就亮了。

  3.自己做小电池,放进准备好的清水中试一试。

  (1)教师检查夹子夹的对不对。

  (2)观察小灯泡亮不亮。

  4.在杯中加入盐试一试。

  (1)教师巡回指导观察幼儿操作情况。

  (2)提问:你的电池是怎样做成的?

  刚才加入很多盐为什么不亮?(需要搅一搅,让盐水溶入在水里)(3)请没有做成小电池的小朋友再试一试。

  5.小结:刚才在没有加盐的清水中灯泡不亮,在盐水中灯泡就能亮。

  四、有趣的小电铃

  1、教师出示小电铃夹在自制的小电池上,小电铃唱歌了。

  2、朋友每个人拿一个小电铃夹在自制的小电池上试一试。提示:看看别人的夹子是怎样夹的。

  3、提问:你的小电铃为什么能响?为什么小电铃不响?

  4、小结:电铃上的夹子有两个,一个红颜色、一个黑颜色,夹子只有夹对了才会响,这是为什么呢?"教案来自:屈;老师教;案网."这个问题等小朋友长大以后学了更多的本领就会明白的。

  五、扩展知识。

  今天咱们做了小电池,你还知道有哪些电池?(干电池、BB机上用的电池、表上的纽扣电池,充电电池……)这些电池都是人们动脑筋发明出来的,小朋友今后也要多动脑筋,长大以后发明出多种多样的电池。

活动反思:

  通过认识电池,幼儿对电池的用途有了一定的了解,知道它为我们人类做了很多事情,还了解了电池有不同的形状,有圆有方,有粗有细,有大有小。与此同时,幼儿初步认识到废旧电池给人们带来的危害也非常大(通过老师的介绍,孩子们都吃惊地瞪大了眼睛,这是他们没想到的),表示今后电池用完后,不会再到处乱丢了,一定要把它们放到专门的回收点去,这样,我们的身体就会健康,就不会生病了,我们的环境也会越来越好。

教案原文链接地址

https://www.qulaoshi.com/zhongban/kexue/41835/

(长按复制上面网址,用手机或电脑的浏览器打开。)

福利:公众号内回复【领图片】可以免费获取两千张PPT图片素材哦~

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  1. CONNECT:[ UseTime:0.000440s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000763s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.010497s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.008354s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000772s ]
  6. SELECT * FROM `set` [ RunTime:0.022117s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000783s ]
  8. SELECT * FROM `article` WHERE `id` = 515182 LIMIT 1 [ RunTime:0.001340s ]
  9. UPDATE `article` SET `lasttime` = 1782213240 WHERE `id` = 515182 [ RunTime:0.008668s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.008958s ]
  11. SELECT * FROM `article` WHERE `id` < 515182 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.007525s ]
  12. SELECT * FROM `article` WHERE `id` > 515182 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.054345s ]
  13. SELECT * FROM `article` WHERE `id` < 515182 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.014334s ]
  14. SELECT * FROM `article` WHERE `id` < 515182 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.036565s ]
  15. SELECT * FROM `article` WHERE `id` < 515182 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003635s ]
0.249268s