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1、青岛版小学科学四年级下册筷子折了教学反思筷子折了教学反思筷子折了教学反思 筷子折了这节课是通过学生在生活中看到碗里或者是杯子里的筷子折了的现象,探究光通过一种介质进入另一种介质的时候,有可能是要发生偏折的。在本节课的设计过程中,首先在展示筷子折了的图片中,引导学生提出问题,激发学生的探究此现象的兴趣。本课的设计及通过上课,基本上达到了学生的学习目标,使学生在积极探究中学到知识,增长技能,提高探究兴趣,体验探究的成功的乐趣。本节课的实验设计主要让学生亲身的观察到光发生偏折的现象,这是一个重要而且非常直观的实验。学生在探究中,观察到光的折射现象。并且能够利用观察到的现象解释筷子折了的原因。这是个难
2、点,而且是重点。并且引导学生试着用折射的定义解释生活中的常见的现象以及海市蜃楼的形成原因。课堂上学生的思维基本还是沿着正确的方向在行进,主要问题出现在验证实验环节。学生分小组用玻璃片和激光笔验证光的折射,有的组操作成功了,有的组不成功,原因就是玻璃片太薄而激光笔的笔头较粗,不容易让激光笔射出的光进入玻璃,必须把玻璃片平移到桌边。由于时间的原因,没有将指导做的更到位更细致些。课前的备课、课上对学生的关注、对教学节奏的把握,应该更充分些、更细致些、更到位些。 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!16o8vpon811nrjyfjz
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