数学图形表象教学缺乏实证研究支持；

There is no sufficient practical research to support math graphic representation teaching;

youdao

在教科书中，图形作为学科语言的一部分使用，如数学或经济学中，或作为学习辅助工具使用。

Graphics are used in textbooks as part of the language of the discipline, as in math or economics, or as study aids.

youdao

而这种语言使用数学语言写就的，它的字母就是三角，圆和其他几何图形，没有了这一切，意味着不可能读懂一个简单的词汇。

It is written in mathematical language and the letters are triangles, circles and other geometrical figures, without which means.

youdao