工作就用美篇工作版","guide_search_desc":"海量模板范文,一键做同款 工作就用美篇工作版","img_beautify_switch":0,"ad_free":0,"text_direction":1,"template":{"id":9286,"series_id":38,"theme_id":38},"container":{},"redirect":{"redirect_type":1,"img_url":false,"link_url":"/wap/downloadpage/backpage","button_bg_color":false,"button_desc":false,"redirect_desc":false},"edit_date_str":"发布于 2021-04-08","current_time":1743833866,"font_name":"","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"空气","score":0.454389},{"name":"幼儿","score":0.214154},{"name":"活塞","score":0.184343},{"name":"阀门","score":0.137882},{"name":"田晓宇","score":0.103058},{"name":"圣泽","score":0.103058},{"name":"管子","score":0.102734},{"name":"密封","score":0.0981},{"name":"容器","score":0.097627},{"name":"手套","score":0.097575}],"music_name":"","origin_status":0,"password_v2":"","font_id":0,"title_style":"","rich_text_title":"","enable_download":1,"cover_thumb":"https://ss-mpvolc.meipian.me/users/82920126/370a427b6804c02c8f156b9cb80210c2__jpg.heic","has_video":true,"gift_switch":1,"enable_watermark":1,"content":{"article_id":275985808,"content":[{"audio_music_id":0,"source":0,"text":"
观察时间:2021年3月26日
观察地点:小一班科学区
观察幼儿:安俊译、田方翌、王泠风、潘圣泽
儿童年龄:3~4岁
观察教师:田晓宇
空气是维持生命的重要来源,没有空气就没有生命,空气是与我们的生命息息相关的,世间万物的勃勃生机都是因为有空气的的存在为我们提供丰富的材料儿童有着与生俱来的好奇心和探索欲望探究既是幼儿学习的过程也是幼儿学习的途径。
区域活动的时间到了,大家都选到自己喜欢的区域,进入科学区的小朋友,拿着选好的空气实验展开讨论。
场景一
俊译:“原来我们的嘴巴里也有空气,大家来看,我把一次性手套里吹的满满的空气”。
方翌:“我吸一大口空气吹进一次性手套里,这样空气就多吹进去一点”。
泠风:“我发现吸气手套缩进去,呼气手套弹出来”。
教师总结:我们的生活离不开空气,我们的身体每时每刻都在通过呼吸与周围的空气进行气体交换,人是靠口鼻呼吸,而肺是呼吸系统的主要器官,是气体交换的主要场所。
幼儿:“原来我们呼吸空气身体里才会有空气,我们离不开空气”。
场景二
圣泽:“水是怎样进入压水井里面的呢”?
泠风:“我们来试试看”。
圣泽:“轻轻的压井不出水,我加速压试试 ,水进来了,越来越多”。
泠风:“我看到当你把手向下的时候,容器里面好像有东西用力的把水吸进了容器里”。
圣泽:“我觉得是空气把水吸进了容器里,我看到就像我们呼吸一样,把手向下是吸气,把手向上呼气”。
泠风:“如果是空气,呼气为什么水打上去的水不会漏下来呢”?
教师介入指导:“仔细观察压水井的容器,发现了什么”?
圣泽:“我发现里面有个塞子,好像把进来的水给堵住了一样”。
泠风:“我也发现了里面的塞子,水进来之后不会流出去,只会越积越多的水,到达高度才会流出来”。
教师总结原理:上面有一个活塞,下面有一个阀门,这个活塞和阀门都是一个单向阀,使空气往上走而不往下走,活塞往上走时,阀门开启,可以将下面管子里的空气抽到上面空腔来,活塞往下走时,阀门关闭,空气从活塞边上冒出来,如此循环将下面管子里抽成真空,水就在大气压的作用下,被抽上来了,但有时密封不好,活塞往上走时外面的空气会漏进去,活塞往下走时,空腔的空气也可能从阀门出漏进下面的管子里,这样就很难将管子抽空,由于水有一定的密封作用,加上水后密封效果提高,很快就能抽上水来,引水的作用就是密封。
幼儿:“原来看不见摸不到的空气力量也是很大的,可以把下面的水压上来”。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODI5MjAxMjYvYzgwMzhlZmNiYTE4NGYyMGI0YmQ3OGY4YjJjOTA0MDVfX2pwZy5oZWlj/nickname/5a6H/userid/ODI5MjAxMjY=/sign/b65a7c958ae66b7ddbe072d45d5d41eb"},{"audio_music_id":0,"img_height":720,"img_width":1280,"is_origin":false,"source":0,"source_platform":"local","type":3,"video_length":44,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/82920126/1617868114556__jpg.heic","video_url":"http://video.ivwen.com/users/82920126/1617868101451.mp4"},{"audio_music_id":0,"source":0,"text":"反思:无处不在的空气,在幼儿眼中蕴含着许多“小秘密”,空气本身就是看不见,摸不着的东西,幼儿通过发现,分析,解决问题积累了经验,同时也培养了幼儿的观察力及动手操作的能力。
","type":1},{"audio_music_id":0,"source":0,"text":"供稿:田晓宇
编辑:田晓宇
审核:李洪英 李辉
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观察地点:小一班科学区
观察幼儿:安俊译、田方翌、王泠风、潘圣泽
儿童年龄:3~4岁
观察教师:田晓宇
空气是维持生命的重要来源,没有空气就没有生命,空气是与我们的生命息息相关的,世间万物的勃勃生机都是因为有空气的的存在为我们提供丰富的材料儿童有着与生俱来的好奇心和探索欲望探究既是幼儿学习的过程也是幼儿学习的途径。
区域活动的时间到了,大家都选到自己喜欢的区域,进入科学区的小朋友,拿着选好的空气实验展开讨论。
场景一
俊译:“原来我们的嘴巴里也有空气,大家来看,我把一次性手套里吹的满满的空气”。
方翌:“我吸一大口空气吹进一次性手套里,这样空气就多吹进去一点”。
泠风:“我发现吸气手套缩进去,呼气手套弹出来”。
教师总结:我们的生活离不开空气,我们的身体每时每刻都在通过呼吸与周围的空气进行气体交换,人是靠口鼻呼吸,而肺是呼吸系统的主要器官,是气体交换的主要场所。
幼儿:“原来我们呼吸空气身体里才会有空气,我们离不开空气”。
场景二
圣泽:“水是怎样进入压水井里面的呢”?
泠风:“我们来试试看”。
圣泽:“轻轻的压井不出水,我加速压试试 ,水进来了,越来越多”。
泠风:“我看到当你把手向下的时候,容器里面好像有东西用力的把水吸进了容器里”。
圣泽:“我觉得是空气把水吸进了容器里,我看到就像我们呼吸一样,把手向下是吸气,把手向上呼气”。
泠风:“如果是空气,呼气为什么水打上去的水不会漏下来呢”?
教师介入指导:“仔细观察压水井的容器,发现了什么”?
圣泽:“我发现里面有个塞子,好像把进来的水给堵住了一样”。
泠风:“我也发现了里面的塞子,水进来之后不会流出去,只会越积越多的水,到达高度才会流出来”。
教师总结原理:上面有一个活塞,下面有一个阀门,这个活塞和阀门都是一个单向阀,使空气往上走而不往下走,活塞往上走时,阀门开启,可以将下面管子里的空气抽到上面空腔来,活塞往下走时,阀门关闭,空气从活塞边上冒出来,如此循环将下面管子里抽成真空,水就在大气压的作用下,被抽上来了,但有时密封不好,活塞往上走时外面的空气会漏进去,活塞往下走时,空腔的空气也可能从阀门出漏进下面的管子里,这样就很难将管子抽空,由于水有一定的密封作用,加上水后密封效果提高,很快就能抽上水来,引水的作用就是密封。
幼儿:“原来看不见摸不到的空气力量也是很大的,可以把下面的水压上来”。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODI5MjAxMjYvYzgwMzhlZmNiYTE4NGYyMGI0YmQ3OGY4YjJjOTA0MDVfX2pwZy5oZWlj/nickname/5a6H/userid/ODI5MjAxMjY=/sign/b65a7c958ae66b7ddbe072d45d5d41eb"},{"audio_music_id":0,"img_height":720,"img_width":1280,"is_origin":false,"source":0,"source_platform":"local","type":3,"video_length":44,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/82920126/1617868114556__jpg.heic","video_url":"http://video.ivwen.com/users/82920126/1617868101451.mp4"},{"audio_music_id":0,"source":0,"text":"反思:无处不在的空气,在幼儿眼中蕴含着许多“小秘密”,空气本身就是看不见,摸不着的东西,幼儿通过发现,分析,解决问题积累了经验,同时也培养了幼儿的观察力及动手操作的能力。
","type":1},{"audio_music_id":0,"source":0,"text":"供稿:田晓宇
编辑:田晓宇
审核:李洪英 李辉
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