It says existing research does not show just what knowledge or skills are needed for effective math teaching.

它说现有的研究并没有显示到底哪些知识和技能是有效数学教学所需要的。

youdao

It says existing research does not show just what knowledge or skills are needed for effective math teaching.

它说现有的研究并没有显示到底哪些知识和技能是有效数学教学所需要的。

youdao