思维是由“问题”开始的,没有问题思维难于进行,更难于深入和创新。美国芝加哥大学教授J.W.盖泽尔斯把“问题”大致分为三类:呈现型、发现型和创造型。现在课堂教学中教师们提出的问题大多属于呈现型的“问题”。这种问题往往追求“唯一正确的答案”,并非学生主动参与的产物,它只要学生“按图索 Thinking starts with “problems.” There is no problem thinking is difficult to carry out, it is more difficult to deepen and innovate. Professor J.W. Gazels, a professor at the University of Chicago, roughly divided the “problems” into three categories: presentation, discovery, and creativity. Most of the problems raised by teachers in classroom teaching today are presented as “problems.” This kind of problem often pursues “the only correct answer.” It is not the product of students’ active participation. It only asks students to "according to