研究表明:学生对所教内容的平均回忆率为教师讲授5%、学生阅读10%、视听并用20%、老师演示30%、学生讨论50%、学生实践70%。因此,数学教学中,要把学生放在课堂的中央,让学生成为课堂学习的主动参与者、合作者和创造者。一、理解概念动态生成:“问题让学生提”爱因斯坦曾经说过:“提出一个问题往往比解决一个问题更加重要。”有了问题,学生的思维就有了方向;有了问题,学生的思维就有了动力。因此,在课堂教学中,教师要善于创设问题情境, The research shows that the average recollection rate of the students is 5% for teachers, 10% for students, 20% for audiovisual use, 30% for teachers, 50% for students and 70% for students. Therefore, mathematics teaching, students should be placed in the middle of the classroom, so that students become active participants in classroom learning, collaborators and creators. First, to understand the concept of dynamic generation: “Einstein once said: ” There is often more important than to solve a problem. "There is a problem, the student’s thinking has a direction; there The problem, students have the power of thinking. Therefore, in classroom teaching, teachers should be good at creating problem situations,