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幼儿园小班科学《荧光流星雨》教案、PPT

  • 2026-05-16 17:53:19
幼儿园小班科学《荧光流星雨》教案、PPT

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荧光流星雨

幼儿园小班科学

PPT、教案

一、活动目标

1. 对荧光现象和流星雨产生好奇与探索兴趣，感受科学小实验的神奇与趣味。

2. 观察并描述维生素B2在水中溶解及在灯光照射下出现“荧光流星雨”的现象，提升观察力和语言表达能力。

3. 能够在教师引导下，尝试简单操作，体验动手实验的乐趣，培养初步的科学探究意识 。

二、活动准备

1. 材料准备

• 足量的水，透明杯，维生素B2药片，手机灯光，彩色卡纸，沙锤

2. 经验准备：幼儿有过简单的观察经验，对水、杯子等常见物品有一定认知。

3. 环境准备：活动教室光线可调节，在进行实验观察环节时，能够调暗室内光线，突出灯光照射效果。

。。。。。。

获

取

方

式

会员可在《流浪表格会员版》自行下载

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  1. CONNECT:[ UseTime:0.000796s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000909s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003881s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.006971s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001007s ]
  6. SELECT * FROM `set` [ RunTime:0.007158s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000814s ]
  8. SELECT * FROM `article` WHERE `id` = 508489 LIMIT 1 [ RunTime:0.005634s ]
  9. UPDATE `article` SET `lasttime` = 1779140405 WHERE `id` = 508489 [ RunTime:0.008421s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000395s ]
  11. SELECT * FROM `article` WHERE `id` < 508489 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000646s ]
  12. SELECT * FROM `article` WHERE `id` > 508489 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000449s ]
  13. SELECT * FROM `article` WHERE `id` < 508489 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004224s ]
  14. SELECT * FROM `article` WHERE `id` < 508489 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003832s ]
  15. SELECT * FROM `article` WHERE `id` < 508489 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000745s ]
0.200065s