一、课例背景新课程背景下的课堂教学越来越重视学生知识形成过程,强调帮助学生在自主探索和合作交流过程中真正理解和掌握基本数学知识与技能,数学思想和方法,获得广泛数学活动的经验。在这样的开放理念指引下,我也在努力开放课 First, the background of the context of the new curriculum in the context of classroom teaching more and more emphasis on students knowledge formation process, emphasizing to help students in their own exploration and cooperation and exchange process to truly understand and master the basic mathematical knowledge and skills, mathematical ideas and methods, access to a wide range of mathematics Activity experience. Under the guidance of such an open concept, I also strive to open classes