[我听了一节含参数的一元二次方程的习题探讨课.这节课,老师用一个例题带领全班学生作探讨,又用两个习题作为课堂练习.这是一节大致以桑代克的“试误说”学习理论组织的课——在探索解决问题的过程中,鼓励学生把他们的头脑中出现的各种想法、方案大胆地一一说出来.然后,组织学生分别进行尝试、鉴别与评判.在尝试失败或成功的反复过程中,学生对有关知识的正确的联结与不正确的反应辨别清楚了,而且提高了评判 [I have listened to a problem solving class with a parametric quadratic equation. In this lesson, the teacher used a sample question to lead the whole class for discussion, and also used two exercises as a class exercise. This is a section roughly Ke’s “trial and error theory” class organized by learning theory encourages students to speak boldly about the ideas and solutions that appear in their minds. Trying, identifying, and judging. In the process of repeated failures or successes, the student’s correct connection and incorrect reaction to the knowledge are clearly identified and the judgment is improved.