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数学课上,老师往往会借助一些工具来帮助同学们理解知识。运用好这些工具,便可收到事半功倍的效果。一、七巧板七巧板设计科学,构思巧妙,所以广为流传。它由五块大小不等、形状不同的三角形以及一个正方形和一个菱形组成,可以随意拼出150种图案。利用七巧板可以渗透对平面图形的认识、相关图形的面积(和周长)的计算、对组合图形的一些相关认识和计算等。
In math class, teachers often use some tools to help students understand the knowledge. Use these tools, you can receive a multiplier effect. First, the Tangram tangram design science, clever idea, so widely circulated. It consists of five sizes, different shapes of triangles and a square and a diamond, you can spell out 150 kinds of patterns. The use of jigsaw puzzle can penetrate the understanding of plane graphics, graphics related to the area (and perimeter) of the calculation, the combination of some of the graphics and related understanding and calculation.