近几年来，随着我国中学数学教育改革的迅速发展、教学研究活动的不断深入，“说理”这种形式的教研活动受到广大教师的日益重视，在各级教研活动中对它的采用也越来越普遍．在此基础上，中国教育学会中学数学专业委员会（以下简称《教研会》）于１９９８年１１月在湖北宜... In recent years, with the rapid development of high school mathematics education reform in China and the continuous deepening of teaching and research activities, this form of teaching and research activity has received increasing attention from teachers and the use of it in teaching and research activities at all levels has increased. The more common it is. On this basis, the Chinese Academy of Education High School Mathematics Professional Committee (hereinafter referred to as “the Institute of Teaching and Research”) was established in November 1998 in Hubei...