1　问题的提出错误是学生在学习过程中自然存在的现象 ,也是不可避免的 ,在数学教学中企图让学生完全避免错误是不可能的 ,也是没有必要的 .相反 ,在某些情况下却需要有意识地让学生专门进行“尝试错误”的活动 ,这样 ,一方面可充分暴露学生思维的薄弱环节 ,有利于对症下药 ;另 1 It is a natural phenomenon that students make mistakes in the learning process. It is also inevitable. It is impossible and unnecessary to attempt to avoid mistakes completely in mathematics teaching. Instead, it is necessary in some cases. Students are consciously dedicated to “trying wrong” activities. On the one hand, they can fully expose the weaknesses of students’ thinking and are conducive to the right medicine;