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探究实践 | 回溯性教案——稳固的双层楼房

  • 2026-06-15 09:19:44
探究实践 | 回溯性教案——稳固的双层楼房
稳固的双层楼房

游戏区域:螺母积木区

时间:2026年4月14日—16日

在户外螺母积木搭建游戏时,小熙、一凡、文博、小兴等幼儿尝试用竖直长板插入板的长孔中搭建房屋,搭建后的柱子频频歪斜、倒塌,孩子们发现搭建难题后自发围坐交流、开展思维共享,猜想转接板或许可以固定横竖板材。幼儿先在室内桌面分组实验验证,之后来到户外场地实操搭建,最终成功造出稳固的双层楼房,幼儿将二层铺设软垫后可以安稳落座,进行枪战游戏。

实录:

讨论话题:探究房屋倒塌的问题与转接板的妙用

通过回顾倒塌的搭建作品,幼儿围绕“房子总歪、容易倒”的现象互相研讨。

师:你们遇到了什么问题?

小熙:只用长板插进竖板孔洞,房子一碰就歪,很容易倒。

文博:竖直木板拼接的地方不牢固,缝隙大,架子站不稳。

小兴:没有东西固定,房子会倾斜倒塌。

师:为什么只用长板穿插搭建,房子就容易歪斜倒塌呢?

文博:长板只是插进孔里,没有东西锁住两块板子,竖板会歪斜。

一凡:两块板连接处空空的,没有固定,一摇晃就分开。

小兴:材料柜子里有那种三角板,说不定能把横板和竖板连在一起。

探索实验:

接下来幼儿分成两组拼装,一组沿用长板直插的搭建方法,一组搭配转接板固定拐角,反复摇晃、拆装测试作品,幼儿分享实验结果发现:加装转接板固定直角接口,结构紧实,不容易倾斜倒塌。

总结经验:

转接板卡在长板拐角处,能把横竖木板牢牢锁住,分散架子的受力,所以房屋不容易散架;只把长板插进孔洞,长板没有限制,受力错位就会歪斜倒塌。

师:除了搭建积木房子,我们的生活中哪些物品也用了拐角固定的办法?

一凡:家里桌子的桌腿和桌面,拐角是固定住的,桌子不会晃。

文博:水杯架、衣柜都有固定,不会散掉。

小熙:门框四角牢牢固定就不容易变形。

新一次的游戏中,在使用转接板建构双层楼房后,开展思维共享:

师:转接板固定还有什么注意的呢?

小远:我发现一定要用螺母拧紧,不然还是会歪斜。

小恒:是的,螺母拧的时候要一边用手固定住,另一边使劲拧,才能拧得紧。

文博:我在楼房的二楼上打枪感觉很稳固,上下楼都很安全。

通过以上活动,达成的目标:

1. 能大胆表述自己的搭建发现,用完整语句对比两种拼接方式的不同。

2. 愿意与同伴合作探究,在思维共享中倾听同伴想法,协商分工完成搭建。

3. 感知直角固定对结构稳固的作用,初步理解转接板固定、分散受力的建构原理。

教师反思:

本次活动源于幼儿搭建中房屋倒塌的真实游戏发现,真正体现了幼儿在前,教师在后的教育理念,螺母积木不仅是建构玩具,更是天然的结构探究材料。

活动中幼儿兴趣浓厚、参与度高,在对比、尝试、讨论中自主建构经验,幼儿持续猜想、反复试搭、自主归纳。也存在教师抛出的问题还不够开放,以教师提问孩子回答为主,孩子们之间的思维碰撞相对较少。

除此之外,本次活动暴露突出问题:幼儿对螺母积木各类零件外形、功能认知不足,仅熟练长板、竖板,偶然发现转接板,无法根据建构需求自主选用多样配件,前期无效试搭耗时较多。

这也让我深刻意识到:

1.一定要给予幼儿充分思辨的机会,再等一等,到游戏现场找答案;

2.后续将开展活动《螺母积木小零件大本领》,帮助幼儿认识全品类积木配件;

3.投放建构区零件图鉴的相关绘本和资料,支持孩子们自主探究各类零件的使用方法。

END

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  1. CONNECT:[ UseTime:0.001220s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001780s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000695s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000631s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001322s ]
  6. SELECT * FROM `set` [ RunTime:0.000555s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001466s ]
  8. SELECT * FROM `article` WHERE `id` = 510132 LIMIT 1 [ RunTime:0.001039s ]
  9. UPDATE `article` SET `lasttime` = 1781707838 WHERE `id` = 510132 [ RunTime:0.025785s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000728s ]
  11. SELECT * FROM `article` WHERE `id` < 510132 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001225s ]
  12. SELECT * FROM `article` WHERE `id` > 510132 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001260s ]
  13. SELECT * FROM `article` WHERE `id` < 510132 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002578s ]
  14. SELECT * FROM `article` WHERE `id` < 510132 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001797s ]
  15. SELECT * FROM `article` WHERE `id` < 510132 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.019507s ]
0.225123s