青岛版小学科学五年级下册《凸透镜》教学反思.doc

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1、青岛版小学科学五年级下册凸透镜教学反思青岛版小学科学五年级下册凸透镜教学反思凸透镜教学反思本节课我根据教学的重难点，大胆解放学生，让学生动手实验，观察实验现象，在“玩”中发现问题，生成问题,解决问题。我为学生设计了三次探究活动：在玩中认识凸透镜的镜片特点；初步探究，认识凸透镜的作用；进一步探究，感受凸透镜在不同条件下成不同像的事实。三次探究活动由浅入深，由易到难。把课堂真正还给了学生，使每个学生当了一次小科学家，通过自己动手，动脑及小组交流等活动，熟悉凸透镜的特点，感受凸透镜的神奇。不足之处在于，由于受课堂时间的限制，学生自主探究的时间较短，部分预设在课堂上没有生成，使得课堂少了几分精彩。为了

2、使课堂教学更加完美，我在以下两个环节中做了补充。我在探究活动（二）亲身体验，分组研究凸透镜的作用这一环节中，我给学生充分的汇报时间，在做凸透镜成像实验时，老师故意操作错误，不仅能引起学生强烈的学习兴趣，教会学生正确利用凸透镜成像，而且还为下一步研究凸透镜成像的规律打下了基础。在2.亲手实践，探究凸透镜有成像的规律这一环节中，我增加了学生讨论实验方案这一环节。让学生在实验中了解凸透镜成像的特点，并掌握正确的实验方法，培养学生善于观察、善于思考、善于解决问题的能力。多媒体手段的利用，有效地增强了学生对凸透镜的理解与感受，真正地为小学科学教学提供了理想的环境。同时，它通过化远为近，化难为易，化抽象为

3、具体等多种表现手法，调动一切非智力因素，帮助学生更真实、生动、形象地感知理解教材，启迪了学生思维，引导学生观察，指导学生实践，使学生在学习中真正发挥主体作用，使学生在获取知识的同时，逐步学会学习、学会探索、学会创造。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！16c.,9k9yhwr4a22apsc0y0.erj9p,itx4wsfr56hpb7k7e1jogekedkk,p,s0.l11o6dmweui6ofalpf7h2unuybirdia6x9k8ln4wxtvkcu8djxhsrelpuki6qy4zn8wbafd,8ocsw

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