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2011年第3期《中小学数学》(小学版)发表了董丽君的《三年级学生理解和倍、差倍关系的教学实验与研究》一文。董老师潜心钻研小学数学教学,站在整个小学六年数学体系的角度,提出了在三年级实施和倍、差倍关系教学的必要性。拜读了该文,对董老师的教学视野表示由衷的钦佩,觉得深受启发。诚如董老师所
2011 No. 3 “primary and secondary mathematics” (primary school edition) published Dongli Jun “third grader understanding and times, the times the relationship between teaching experiment and research” one article. Tung teacher devoted himself to the study of mathematics in primary schools, standing six years of mathematics in primary schools from the point of view, put forward in the third grade and the times, the difference between the times the need for teaching. After reading the article, she expressed her heartfelt admiration for Teacher Dong’s teaching horizons and she was deeply inspired. Just as Dong teacher