青岛版小学四年级上册科学《水流有力量》反思.doc

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1、青岛版小学四年级上册科学水流有力量反思听课评课记录有流有力量教学反思（一）导入环节简单明了，“小浪底冲浪”的视频形象直观的体现了水流有一冲击力，激起了学生对本节课学习兴趣。培养学生的问题意识。学生在仔细观察的基础上交流自己的发现，并结合已有的经验体会到水流可以产生力量。（二）探究环节在本节的重点难点，将其分层了以下环节：(1) 让小水轮转起来。教学流程：【教师引导】同学们，你能让小水轮转起来吗？【学生讨论汇报】用嘴吹。【教师】嘴吹，运用的是谁的力量？【学生】风的力量。【学生】用手拨动小水轮。【教师】拨动小水轮运用是手的力量。手的力量大，水轮转的就快；手的力量小水轮转的就慢。【学生】用水冲击小水

2、轮它也能转起来。【教师】你这个发现很好。让学生玩水轮可以更好地激发学生的探究兴趣，给学生更大的探究空间，在玩水轮中发现问题、提出问题，然后通过讨论和交流，达成共识：水流产生力量。（2）猜想：水流在什么情况下产生的力量大？教学流程：【教师】同学们的生活经验非常丰富。那你们想过没有水流在什么情况下产生的力量大？什么时候产生的力量小呢？想一想。【学生思考后汇报】水位高的时候产生的力量大。我认为水流量多的时候产生的力量大。我认为水流快的时候产生的力量大。【教师板书】 水量多 少水位高 低 大 小 ？本环节的目的是学生在探究中不断地发现新的问题，使探究活动得以延续。让学生通过实验，体会对比实验的方式和方

3、法，为下一步学习设计对比实验打下基础。（3）在实验过程中，提示学生注意各种变量的控制，才能达到实验的准确性。在实验中教师积极参与到学生的探究活动中，学生可以离开座位与同学交流、互助，体现活动的开放性、探究性，引导学生发现更多的问题。最后让学达成共识，意识到水流能够产生力量，知道影响水流力量大小的因素。结束语！祝大家学到有用的知识，提升自己的能力，实现自己的梦想，踏踏实实干好每一件事，为美好的明天而努力！16xzi7ijfa5lpi6uox4wsfjwu98xtod.adwww4343e,oqsfv177jbdt,isxct2qkw,bt6,911bvb1clxy0m1v4wlnri3qrr8x

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