缘由有效教学是课堂教学的永恒话题,是我国小学数学课堂教学的传统与优势。在新课程实施的大背景下,我们重提有效教学的话题,既是对新课程实施过程中某些做法的纠偏,也是教育改革发展到今天,进一步消化吸收国外先进的教育教学理念,继承发扬我国优秀教育传统,建设有本土特色的小学数学教育教学理论体系的需要。有效教学是一项非常复杂的系统工程, The reason is that effective teaching is the eternal topic of classroom teaching, which is the tradition and advantage of mathematics classroom teaching in primary schools in our country. In the context of the implementation of the new curriculum, we re-mentioned the topic of effective teaching, not only the rectification of certain practices in the implementation of the new curriculum, but also the education reform and development to today, further digest and absorb advanced foreign education and teaching philosophy, inherit and carry forward our country Excellent educational tradition and the need of building a local characteristic primary mathematics education and teaching theory system. Effective teaching is a very complex system engineering,