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      试析巧设物理课堂活动 提高课堂教学效率

      论文导读:学生对理论的理解,从而提高课堂教学效率。所以课堂上应尽可能地将演示实验改为学生实验。例如,学习《液化现象》时,让学生向干冷的玻璃呵气,学生通过认真观察、分析实验现象,很容易理解“液化”的概念! ∪、精心设计分层课堂练习,强化不同层次学生自主练习,巩固他们所学的物理知识  练习是推动知识迁移、形成技能技巧、原文出自:中报教育网论文中心 http://www.zglww.net

      巧设物理课堂活动 提高课堂教学效率物理教学活动旨在引起师生之间的互感互动。教师要通过对学生学习状态的分析及物理教学规律进行教学设计。教学活动,要符合新课程教学理念,要以学生活动为中心,以学生的学习过程为重点,以学生学会学习为目标,引发学生主动参与教学过程,让学生在课堂上通过自己的活动、体验、感悟形成能力素养,提高学生学习物理的能力。下面就如何设计物理课堂活动,提高课堂教学效率,谈谈个人的看法。
        一、设计教学情境,展开讨论,提高学生的学习兴趣
        教学情境能引起学生的认知冲突,产生学习的需要,从而产生极大的学习兴趣。所以在课堂上以学生已有的知识为前提,创设教学情境,让学生感受身边真实的物理,引起学生想要解决物理理由的冲动。例如,在《物体的浮与沉》一节,要了解物体的浮沉条件,先创设理由情境:“浸没在水中的乒乓球为什么上浮,而浸在水中的铁块为什么下沉?”理由提出后学生的注意力被引向教学主题,学生讨论后,有的认为是乒乓球轻,而铁块重的缘故。接着创设实验情境:教师把一个重的乒乓球和一个比球轻的小铁块放到水中,结果铁沉球浮,出乎学生的意料。这时学生的脑海里充满了疑惑、好奇,更激起学生的学习兴趣和探究 。然后引导学生通过探究活动了解哪些物体是上浮的,哪些物体是下沉的,怎么使上浮的物体下沉以及怎么使下沉的物体上浮,从而搞清物体的浮沉条件。
        二、将演示巧设物理课堂活动 提高课堂教学效率由优秀论文网站http://www.abcanuncios.com提供,助您写好论文.实验设计成学生实验,调动学生学习的主动性
        演示实验大多为验证性实验,教师台上演示,学生在台下伸长脖子看,不仅很多细微的现象无法观察到,且对有着强烈好奇心和求知 的学生来说,看教师的演示实验只不过是过眼云烟,没有创新的 ,这样便失去了实验教学的功能。而学生实验能调动学生学习的主动性,学生在动手实验中通过观察、深思、分析,自己发现理由、解决理由,加深学生对理论的理解,从而提高课堂教学效率。所以课堂上应尽可能地将演示实验改为学生实验。例如,学习《液化现象》时,让学生向干冷的玻璃呵气,学生通过认真观察、分析实验现象,很容易理解“液化”的概念。
        三、精心设计分层课堂练习,强化不同层次学生自主练习,巩固他们所学的物理知识
        练习是推动知识迁移、形成技能技巧、培养学生解决理由能力的基本途径和策略,是教师接收反馈信息调整教学内容的重要环节,所以课堂教学应贯彻以学生自主合作学习为主导、以练习为主线的原则,每节课根据不同知识水平学生的学习情况,设计难易不同的随堂同步练习,让学生从抽象的理论回到实践的练习中,再从练习中提升他们的理论知识。教师设计的练习不能太偏太难,教师还要精心编制题型多样、难度适中、一题多解、突出本节课重难点的练习。
        【例题】 一个重50牛、底面积为5平方厘米的箱子放在水平地面上,求箱子对地面的压强。
        学生都能根据公式,进行较完整的解答。这时可继续引导学生进行讨论,得出以下的变形题。
        1.一个底面积为5平方厘米的箱子放在水平地面上,对地面的压强为2940帕,求箱子对地面的压力。
        2.用20牛竖直方向的力,提在水平地面上重50牛、底面积为5平方厘米的箱子,求箱子对地面的压强。
        3.用20牛沿水平方向的力将重50牛、底面积为5平方厘米的箱子压在竖直墙壁上,则墙壁受到的压强是多少?
        通过变换,可以对学生在思维过程中反映出的对物理概念、物理规律的模糊认识加以纠正;对在分析物理过程中出现的疏忽、遗漏加以强调;对题中的隐含或多余的条件加以挖掘或否定;对所得结果进行再探索。
        四、围绕学生的学习方式,设计课堂教学活动
        新试析巧设物理课堂活动 提高课堂教学效率课程提出了自主学习、探究学习、合作学习等学习方式。为了使这些学习方式真正内化成学生的学习方式,让学生在学习过程中自由地选择合适的学习策略,教师必须按这些学习方式设计一些课堂活动。如,实验教学中往往将实验设计为探究性实验,让学生进行探究学习与合作学习;利用导学案的教学方式,培养学生自主学习和研究性学习能力;把不难理解的教学内容设计为理由情境,让学生带着理由去阅读教材,深思理由,讨论得出答案,培养学生的自学能力和交流能力。当然在尝试新的学习方式的同时,还要重视传统的学习方式在课堂活动中的运用,如讨论法、对比归纳法等。
        五、把教学难点分解设计为易懂的理由,帮助学生理解,提高课堂教学效率
        教材的难点是学生不易理解的知识或不易掌握的技能技巧,是学生学习的困难之处。所以教师只有分解难点知识,把难点讲清楚、透彻,才能扫除学生学习上的障碍,增强学生学好物理的信心。
        一切教学活动都是为了学生,所以设计的教学活动要有趣、有效,要能突出教学重点,并突破教学难点,让全体学生在活动中自觉地参与教学活动。 全文地址:http://www.abcanuncios.com/xxlnjsxjxlw/lw18588.html
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      关于试析巧设物理课堂活动 提高课堂教学效率论文范文由7彩论文网整理编辑提供免费阅读硕士毕业论文
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