目前高效课堂已经成为一线教师所追求的一种理想的教学境界。教学活动中,学生的学习过程是否有效,是课堂教学是否高效的关键。因此,数学课堂教学应该多给学生一点思考的时间,多给一点活动的余地,多给一点表现的机会,让学生做学习的主人,让学生亲历知识的形成过程,体验解决问题的感受。做到这些,课堂“生成”便成为新课程提倡的一个重要教学观念,在积极探索生成性教学的今天,正确把握预设与生成的关系,精心预设,灵活预设,使生成更 At present, efficient classrooms have become an ideal teaching realm pursued by front-line teachers. Teaching activities, the students learning process is effective, is the key to effective classroom teaching. Therefore, the mathematics classroom teaching should give students a little more time to think, giving more room for activities and more opportunities for performance. Students should be masters of learning so that students experience the process of forming knowledge and experience the feeling of solving problems. To do so, the classroom “generation ” has become an important teaching concept advocated by the new curriculum. Today, when actively exploring generative teaching, we correctly grasp the relationship between the preset and the generation, and carefully preset and flexibly preset to make it more