充分体验才能深刻理解

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小学生常常把长方形面积计算与周长计算搞混.原因在于教师只注重对公式的教学,使学生缺乏对面积的充分感知体验.教师应有效改进手段,多给学生摆一摆,数一数,猜一猜.通过充分的体验,学生才能获得对知识的深刻理解.
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