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幼儿园科学之《会变色的光》 PPT 可编辑

2026-08-11 03:22:39

幼儿园科学之《会变色的光》 PPT 可编辑

幼儿园科学之《会变色的光》 PPT 可编辑

幼儿园科学之《会变色的光》 PPT 21页动态可编辑带教案逐字稿说课稿
教学目标
1.认知目标：认识常见光源，了解白光包含红、橙、黄、绿、青、蓝、紫七种颜色；初步感知色光叠加变色的现象。
2.能力目标：能熟练使用手电筒、玻璃纸和三棱镜进行光学实验；能根据指令准确调配出指定颜色的光。
3.情感目标：体验探索光影变化的乐趣，感受光在生活中的作用。#幼儿园 #幼儿园老师 #幼儿园课件 #幼儿园PPT #会变色的光

四川,6小时前,

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SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001599s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000750s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002283s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.001388s ]
SELECT * FROM `set` [ RunTime:0.000630s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.001643s ]
SELECT * FROM `article` WHERE `id` = 546827 LIMIT 1 [ RunTime:0.002020s ]
UPDATE `article` SET `lasttime` = 1786392100 WHERE `id` = 546827 [ RunTime:0.019201s ]
SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.002865s ]
SELECT * FROM `article` WHERE `id` < 546827 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001287s ]
SELECT * FROM `article` WHERE `id` > 546827 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.011404s ]
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SELECT * FROM `article` WHERE `id` < 546827 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005434s ]
SELECT * FROM `article` WHERE `id` < 546827 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002167s ]

0.252268s

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