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,学生还是表现出不明白,茫然不 From the perspective of cognitive psychology, the construction of the meaning of knowledge that students need to master requires meticulous problem design. The main role of students and the leading role of teachers need to be reflected by exquisite problem design. I often hear students say that they can’t understand classes and can’t do classes. They often listen to their teachers and say how many times I have emphasized that they have been thoroughly analyzed. Students still do not understand clearly.