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      [圖文]隨“師”潛入思 潤”生”細無聲
      【字體:
      隨“師”潛入思 潤”生”細無聲
      評——福建省廈門市蓮花中學詹永佐老師執教的示范課《角的認識》作者:胡同祥    文章來源:本站原創    點擊數:    更新時間:2008-12-17

       

      評——福建省廈門市蓮花中學詹永佐老師執教的示范課《角的認識》

      本課時是一堂舊知識的小結和提升的概念課,內容平凡但老師執教的效果是不平凡的.總體印象是:容量大、手段新、講解清的特點,教師秉承課堂引入情景化,教學過程層次化,師生互動開放化,實踐探究目標化的教學風格,充分的體現了數學課堂教學中的激趣、激情、激法、激美教學效果,是一堂實實在在的追求實效的課,也充分的體現了新課程改革中數學課堂教學應突出“三重”的目標。

      一、         重觀察

      1、在教學充分利用現代教育手段努力為學生創設觀察的情景,激發學生觀察的興趣。老師在一開篇就利用圖片為我們的學生學習角的相關內容創設了情景,激發學生的好奇心和探究欲望,加深對角的理解,達到理想的教學效果。2、指導學生把觀察與思考相結合。大家都知道只有觀察不做思考,其觀察也就成了無的放矢,難以實現由感性到理性的跨越。老師在在教學中特別注重對學生的觀察予以正確的引導,把觀察與思考結合起來,并且適時引導學生對觀察的信息進行加工疏理,進而獲得發現或創新,形成循序漸進的良性循環

      二、重綜合

      本課時的教學任務充分地注意了教學內容中的空間和圖形內部的綜合特別到位,加強了經驗幾何、生活幾何、圖形變換、視圖、測量等方面的內容,充分利用學生生活經驗中熟悉的物體和模型使平面與空間,視圖與原狀,位置與方向等各種知識融會貫通起來,以“大數學”的思想為主線,以解決實際問題的方法為紐帶,溝通各類知識的聯系。

      三、重應用

      數學應用意識與應用能力,已成為當代公民不可缺少的文化素養,本課時體現了:(1)數學經歷“從實際中來到實際中去”的過程,在整個教學過程中體現的特別明顯。(2)引導學生用“做數學”的方式學習數學。整個過程引導學生觀察、模仿、實驗、猜想等試驗的方法學習,像數學家發現數學一樣“再創造”。(3)注重“街頭數學”合理融入“數學教學”中來,這樣一來增強學生對社會生活的了解,提高學生數學應用能力。

      總之,這是一堂從“迷戀形式”到“追求實效”的典范課,是一堂值得學習和回味的課

      (點評人:四川省樂山市實驗中學數學組  胡同祥)

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