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轴对称图形与平移旋转一样,是图形变换的方法之一,也是学生学好空间知识与平面图形必不可少的基础。对于帮助学生建立空间观念,培养学生的空间想象力有着不可忽视的重要作用。在进行小学数学第六册轴对称图形一课时,我精心设计了四个主要环节。让学生真正成为课堂的主人,这样不仅营造了一个良好的学习氛围,调动了学生学习的兴趣,更重要是使学生在操作活动中悟出了轴对称图形的基本特征。
Axisymmetric graphics and translation of the same rotation, is one of the methods of graphic transformation, but also students learn spatial knowledge and graphic indispensable foundation. For helping students to establish the concept of space, to develop students’ spatial imagination has an important role can not be ignored. In my primary school mathematics sixth axisymmetric graphics lesson, I carefully designed the four main links. Making students truly masters of the class not only creates a good learning atmosphere and mobilizes students’ interest in learning, but more importantly enables students to realize the basic characteristics of axisymmetric graphics during the operation.