“错误往往是正确的先导”,平时教学中,常常会出现这样或那样的错题:或条件多余,或条件不充分…,且这些错误一般较难被发现.教学中,若能利用这些题目的一些隐晦的错误,设置悬念,启发学生去分析错误的根源,找出解决问题的“良药”,这样不仅能使学生发现错误,从中吸取教训,而且能 “Errors are often the correct precursors.” Oftentimes in teaching, one or more of the wrong questions are often: or conditions are redundant, or conditions are not enough..., and these errors are generally more difficult to find. In teaching, if you can use these topics Some hidden mistakes, setting suspense, inspire students to analyze the root causes of mistakes, to find out the “good medicine” to solve the problem, so that not only can students find errors, learn from them, but also