从认知心理学的角度看,学生所要掌握的知识意义建构需要有精心的问题设计,学生的主体作用、教师的主导作用都需要由精美的问题设计来体现。常常听学生说,上课听得懂,下课不会做;也常常听老师说,我已强调多少次了,已分析得够透彻的了,学生还 From the cognitive psychology point of view, the students need to grasp the construction of the meaning of the knowledge required careful design of the problem, the main role of the students, the teacher's leading role needs to be exquisite design of the problem to reflect. Often listen to students that the class can understand, classes will not do; often listen to the teacher said, I have stressed how many times, the analysis has been thorough enough, the students also