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嗨,小朋友们好!科学游戏时间到,中二班的小朋友给大家带来了什么有趣的实验呢?请看这里👇
","type":1},{"img_height":960,"img_width":540,"source_platform":"local","type":3,"video_length":23.034,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/8153582/ea642be87eeb4470b57e7b44816aa707__jpg.heic","video_url":"http://video.ivwen.com/users/8153582/7ac5f2f32060493fac64a8503e1e3c78.mp4"},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"发展目标: 1、通过活动了解光透过其他物体时的折射现象。 2、鼓励幼儿大胆提出问题,能用较完整的语言表达自己的想法。 3、培养幼儿对科学探索活动的兴趣及丰富的想象力和创造力。 4、培养幼儿对事物的好奇心,乐于大胆探究和实验。 5、激发幼儿对科学活动的兴趣。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"游戏材料: 透明水杯2个、透明吸管2支。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"玩法:
1、把吸管垂直放进水里,并从侧面观察吸管:吸管慢慢倾斜靠在杯口,在水面.上和水面下呈现为断成两截的样子。而且浸没于水中的吸管部分似乎比水面,上的吸管宽。
2、拿起玻璃杯或从下往.上观察吸管,又会发现吸管似乎只是弯曲而没有断成两截。
3、当从下往上看时,吸管在水上部分和水下之间看起来呈弯曲的样子。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"教师小结:当光从一种介质(空气)进入另一种不同密度的介质(水)时,它会弯曲,这称为光的折射。折射使得吸管看起来像是断成两截。
可以发现水面外地部分没有任何变化,但是被插入到水中的部分看起来像是被折断一样,这是因为“光的折射现象”。
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","type":1},{"img_height":960,"img_width":540,"source_platform":"local","type":3,"video_length":23.034,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/8153582/ea642be87eeb4470b57e7b44816aa707__jpg.heic","video_url":"http://video.ivwen.com/users/8153582/7ac5f2f32060493fac64a8503e1e3c78.mp4"},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"发展目标: 1、通过活动了解光透过其他物体时的折射现象。 2、鼓励幼儿大胆提出问题,能用较完整的语言表达自己的想法。 3、培养幼儿对科学探索活动的兴趣及丰富的想象力和创造力。 4、培养幼儿对事物的好奇心,乐于大胆探究和实验。 5、激发幼儿对科学活动的兴趣。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"游戏材料: 透明水杯2个、透明吸管2支。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"玩法:
1、把吸管垂直放进水里,并从侧面观察吸管:吸管慢慢倾斜靠在杯口,在水面.上和水面下呈现为断成两截的样子。而且浸没于水中的吸管部分似乎比水面,上的吸管宽。
2、拿起玻璃杯或从下往.上观察吸管,又会发现吸管似乎只是弯曲而没有断成两截。
3、当从下往上看时,吸管在水上部分和水下之间看起来呈弯曲的样子。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"教师小结:当光从一种介质(空气)进入另一种不同密度的介质(水)时,它会弯曲,这称为光的折射。折射使得吸管看起来像是断成两截。
可以发现水面外地部分没有任何变化,但是被插入到水中的部分看起来像是被折断一样,这是因为“光的折射现象”。
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