解决问题既是学习数学的手段又是学习数学的目的,这里所说的问题既包括数学中的问题,也包括相邻学科中的问题,还包括对中学生来说力所能及的实际问题.美籍数学家乔治·波利亚(GeorgePolya)在《怎样解题—数学教学法的新面貌》一书中,给出了解题的四个阶段:理解题目、拟订方案、 Solving the problem is not only a means of learning mathematics but also a purpose of learning mathematics. The problems mentioned here include not only mathematics problems but also problems in adjacent disciplines as well as practical problems that are beyond the reach of middle school students. In his book, “How to Solve Problems - The New Face of Math Teaching Methodology,” George Pololy gives four phases of problem solving: understanding problems, developing programs,