基于对国内外变式教学研究的认识和了解，笔者感到应该有一个对数学变式教学的理论与实践较为系统的研究。

To the understanding of pedagogy of variation in worldwide, the authors feel that there should be more systematic research variant of the theory and practice of mathematical pedagogy of variation.

youdao

基于对国内外变式教学研究的认识和了解，笔者感到应该有一个对数学变式教学的理论与实践较为系统的研究。

To the understanding of pedagogy of variation in worldwide, the authors feel that there should be more systematic research variant of the theory and practice of mathematical pedagogy of variation.

youdao