纵观一堂数学课的成功,其中一个重要因素就是教师设计的几个有层次、有深度、能激发学生积极思考的数学问题。是它激活学生的想象力,唤醒了学生的思考力,引导学生一步步登上知识的殿堂。可见,提问是否得法,引导是否得力将直接影响教学效果。因此在教学中,我们 Looking at the success of a math class, one of the important factors is that there are several mathematical problems that teachers design that are multi-level and profound and can arouse students’ positive thinking. It is to activate the imagination of students, awakened the students’ thinking skills, and guide students step by step onto the temple of knowledge. Can be seen that the question is whether the law, guidance is effective will have a direct impact on teaching effectiveness. So in teaching, we