在长期的教学实践中,我们发现学生在解题时对题意的理解、对条件的利用等往往显得片面、孤立,习惯于从局部入手处理问题,过分在细节上纠缠、消耗,不善于从整体角度去思考解决问题,这往往导致解题的过程冗长繁难而易出错,解题效率较为低下.要让学生克服或避免出现这样的情况,笔 In the long-term teaching practice, we found that the students’ understanding of the questions and the use of the conditions during the problem-solving are often one-sided and isolated. They are accustomed to dealing with problems from the ground up and overly entwined and consumed in details, and are not good at Considering the problem from an overall perspective, this often leads to lengthy and arduous and error-prone processes. The problem-solving efficiency is relatively low. To allow students to overcome or avoid such situations, the pen