一、引言“问题式学习”是以“问题”为基础的教学方式,它主要是以激发学生自主学习兴趣、提高解决问题能力、拓宽思维宽度等为最终目的。所以设计有效的问题是“问题式学习”成功的首要条件。精心设计才能促进学生学习行为的发生发展,促进学生理解和应用,才有可能完成新课程标准提倡的“以学生发展为本”的教学理念。因此,在 I. INTRODUCTION “Problem-based learning” is a teaching method based on “problem ”, and it is mainly for the ultimate purpose of stimulating students’ interest in learning independently, improving their ability to solve problems and broaden their thinking width. Therefore, the effective design of the problem is “problem-based learning ” the first condition of success. Careful design can promote the occurrence and development of students ’learning behavior and promote students’ understanding and application, so that it is possible to complete the teaching concept of “developing students with the foundation” advocated by the new curriculum standards. Thus, in