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课后一小时,科技大未来!南京青少年科技教育协会带你“玩转”科学社团课

  • 2026-07-13 09:33:19
课后一小时,科技大未来!南京青少年科技教育协会带你“玩转”科学社团课

“双减”政策落地后的校园里,课后服务早已不再是简单的“托管”,而是一段充满惊喜与发现的成长时光。南京青少年科技教育协会深入校园,为孩子们带来了一系列有温度、有深度、有乐趣的科学社团课程。从地球到天空,从机械到自然,每一节课都是一次动手动脑的科学探险,每一次实验都是一颗悄悄种下的科技种子。时值学期尾声,让我们一同回顾本学期各类特色科技课程开展实况与精彩点滴。

自制风向标——把看不见的风“测”出来

课堂导入:风从哪里来?

“同学们,你们觉得风是什么?”课堂一开始,老师并没有急着讲解原理,而是抛出了这样一个开放性的问题。“风是空气在跑!”“风是树在摇头!”“风是云在动!”孩子们争先恐后地举手回答,课堂气氛瞬间活跃起来。老师顺势引导:风虽然看不见、摸不着,但它有方向、有力量、有速度。那么,我们有没有办法“测量”风的方向呢?

动手制作:做一个属于自己的风向标

今天孩子们要制作的是一款木质风向标测风仪。材料包发下来,孩子们迫不及待地打开:木质底座、风向标箭头、尾翼、立柱、转轴……每一块零件都需要自己组装。“老师,这个箭头怎么装?”“尾翼要固定在那个方向?”在老师的指导下,孩子们一步步操作:先将木质底座组装稳固;再将风向标箭头和尾翼安装在转轴上;最后将整个风向标固定在底座上,确保箭头可以自由转动。制作过程中,有孩子不小心把箭头装反了方向,旁边的小伙伴立刻提醒:“不对不对,箭头应该指向风吹来的方向!”老师顺势引导大家思考:为什么风向标箭头会指向风来的方向?原来,尾翼受风面积大,会把箭头推向风来的方向,这就是风向标的工作原理。

科学小结:风,原来可以这样“看见”

课程结束,老师带领大家回顾今天的实验:风向标为什么会指向风的方向?尾翼的作用是什么?为什么箭头要轻、转轴要灵活?用过亲手制作与测试,孩子们不仅理解了风向测量的基本原理,更感受到科学并不遥远——它就藏在身边的风里,藏在每一次动手尝试中。

地震报警器——感知大地的“心跳”

课堂导入:大地也会“颤抖”吗?

“同学们,你们有没有经历过地震?或者在电视上看到过地震的新闻?”老师用一个问题开启了这节课。孩子们纷纷分享自己的见闻,有的说在纪录片里看过,有的说听爸爸妈妈讲过。老师接着问“那你们知道,科学家是怎么知道地震发生的吗?如果地震来了,我们能不能提前知道?”孩子们一时答不上来。于是,老师拿出一个地震报警器模型,轻轻晃动——警报声立刻响起,孩子们惊讶地叫了出来:“哇,它真的响了!”

动手制作:做一个会“报警的地震仪

今天孩子们要制作的,就是这款地震报警器模型。材料包发下来:木质底座、铜丝、电池盒、蜂鸣器、LED灯、滚珠或悬挂重物……每一个零件都将组成一个能感知震动的“小卫士”。制作过程并不简单,孩子们需要先将电池盒、蜂鸣器、LED灯按电路图连接;再将铜丝弯曲成感应装置,固定在底座上;最后将滚珠或重物悬挂在感应装置上方,确保震动时能触发电路。“我的灯怎么不亮?”“蜂鸣器没响,是不是导线没接好?”教室里充满了孩子们互助的声音,也充满了试错后成功的喜悦。有孩子反复调整铜丝的角度,有孩子仔细检查每一根导线是否连接牢固。正是这种耐心与细致,让他们真正体会到科学实验需要的严谨精神。

科学小结:每一次“振动”都有意义

课程结束时,孩子们不仅带回了自己制作的地震报警器,更带回了对地球科学的好奇与敬畏。“原来地震报警器是这样工作的!”“我回家要放在地上试试,看看有没有用!”这一课,让孩子们在模拟中理解了地震监测与预警的基本原理,也在心中埋下了探索地球奥秘的种子。

电动爬虫——只会“走路”的机械小伙伴

课堂导入:虫子为什么会爬?

“你们见过虫子爬吗?它们是怎么移动的?”课堂从一只小小的虫子开始。孩子们孩子们七嘴八舌地描述着蚂蚁、毛毛虫、甲虫的爬行姿态。老师笑着说:“今天,我们要自己做一只‘虫子’,不过它不是真的虫子,而是一只会爬行的电动爬虫!”

动手制作:给虫子装上“心脏”和“腿”

今天孩子们要制作的,是一款可以DIY的电动爬虫。材料包发下来:小型直流电机、电池盒、导线、齿轮、连杆、泡沫板或塑料片做身体、毛根做触角、塑料轮子做“脚”……孩子们迫不及待地拆开包装,开始组装。

电动爬虫的制作要更复杂一些。孩子们首先需要连接电路:将电机、电池盒、导线正确连接,让电机转动起来。“我的电机怎么不转?”“是不是电池装反了?”“导线要接紧一点!”教室里充满了孩子们互助的声音。接下来是机械结构的安装:通过齿轮和连杆,将电机的旋转运动转化为“脚”的往复运动,这样爬虫就能向前爬行。这一步对不少孩子来说是个挑战,齿轮要咬合紧密,连杆要安装到位。但正是这种挑战,让孩子们真正体会到工程思维的价值——每一步都要精准,每一个零件都不可或缺。

科学小结:从“小爬虫”到“大创造”

课程结束,孩子们不仅拥有了一只属于自己的电动爬虫,更在动手过程中,初步认识了电动机的工作原理、简单电路和机械传动结构。“我以后想做一个更大的机器人!”“我想让它能转弯!”孩子们的创意在课后继续延伸,而这正是科技社团最动人的地方——每一节课,都是一次创造力的点燃。

让科技教育“触手可及”

南京青少年科技教育协会始终相信:最好的科学教育,不是灌输,而是体验;不是记住答案,而是学会提问。在课后社团的课堂里,没有枯燥的公式,只有有趣的实验;没有被动的听讲,只有主动的探索。每一件作品,都是孩子们智慧的结晶;每一次成功,都是科学种子的萌芽;每一次失败后的重新尝试,都是成长路上最宝贵的经历。从木质风向标到地震报警器,再到会爬的电动爬虫——孩子们在动手实践中,触摸到了科学的脉搏,也种下了创新的种子。

如果你也希望孩子们在课后时光里,遇到更有有趣的科学世界,收获更多动手实践的快乐——欢迎关注南京青少年科技教育协会,让我们一起,点亮孩子的科技梦想!

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  1. CONNECT:[ UseTime:0.000582s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000781s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000334s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000323s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000475s ]
  6. SELECT * FROM `set` [ RunTime:0.000223s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000569s ]
  8. SELECT * FROM `article` WHERE `id` = 575280 LIMIT 1 [ RunTime:0.001464s ]
  9. UPDATE `article` SET `lasttime` = 1784209382 WHERE `id` = 575280 [ RunTime:0.034270s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000364s ]
  11. SELECT * FROM `article` WHERE `id` < 575280 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000596s ]
  12. SELECT * FROM `article` WHERE `id` > 575280 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000401s ]
  13. SELECT * FROM `article` WHERE `id` < 575280 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005462s ]
  14. SELECT * FROM `article` WHERE `id` < 575280 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000842s ]
  15. SELECT * FROM `article` WHERE `id` < 575280 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001170s ]
0.148981s