数学教学中某些问题若用常规思维方式解答 ,就显得十分繁杂甚至很难奏效 ,若改变思维方式 ,采用非常规思维方式——创新思维来处理问题 ,就显得异常简捷明快。1.求反面例 1.学校有 2 0 0 3名学生参加乒乓球选拔赛 ,采用单淘汰制 (即输一场即被淘汰 ) ,为了决出第一名 ,共需要安 If some problems in mathematics teaching are answered by conventional thinking, it is very complicated and even difficult to work. If we change the way of thinking and use unconventional thinking methods—innovative thinking to deal with problems, it is very simple and straightforward. 1. The counterexample 1. There are 203 students participating in the ping-pong competitions in the school, and the single-elimination system (that is, the elimination of the game is eliminated). In order to determine the first place, a total of security is required.