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deng yao san jiao xing cao zuo chuang xin ti shi li
Author(s): 
Pages: 17-19
Year: Issue:  11
Journal: School Journal of Mathematics

Keyword:  等腰三角形学习数学自主探索实验操作动手实践火柴棒新境界几何作图数学知识创新思维能力;
Abstract: <正>动手实践、自主探索是学习数学的重要方式之一,通过实验操作,亲身经历探索的乐趣.可以达到学习数学的新境界.现撷取几例.供同学们欣赏.例1如图1,给你一张三角形的纸片ABC,其中AB=AC,∠A=36°,将此纸片按图2中的线剪开,可以将原三角形分为3个等腰三角形.
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