With the announcement of the policy of double reduction in 2021,the voice of reducing students’ academic burden has put forward higher requirements for teachers’ teaching,and the need to change “the sea of tactics” has forced teachers to start exploring and deep learning.The combination of deep thinking,deep exploration and deep experience with problem string is the only way to achieve deep learning.However,the current problem is that the design of the problem string is inefficient and the operability is low.Therefore,the research on the design and practice of the deep learning process model under the question string can provide practical reference for teachers to design exquisite question strings.Through literature analysis method,this study interprets deep learning and question strings at the theoretical level,and provides a theoretical basis for the process model of deep learning under question strings.Based on questionnaires and interviews,the author can understand the current situation of students’ deep learning and teachers’ problems,and provides a realistic basis for the deep learning process model under the problem string.On the basis of Jensen’s deep learning process model and Russo’s mathematical challenging task design link,a deep learning process model is constructed with the teaching process as the intermediate bridge.Finally,taking the “Sum of the Interior Angles” of a triangle as a teaching case,through a controlled experiment,the model is effective in improving students’ deep learning level from the perspective of deep learning input strategy,result dimension analysis,and pre-test data and post-test data verification.The results are shown as follows:(1)The current situation of deep learning for junior high school students is not optimistic enough.Compared with the other two dimensions,the level of deep learning in the input dimension of deep learning is lower,the internal motivation of students is weaker,and they lack confidence in learning mathematics well.(2)At present,front-line teachers have no way to design the concept of in-depth and problem string.The front-line teachers hold a positive attitude towards improving students’ in-depth learning level,but they are not able to grasp the specific operation.(3)The deep learning process model under the problem string can improve students’ deep learning level and academic performance to a certain extent.The post-test data of the experimental class is better than the pre-test data of the experimental class and the post-test data of control class.(4)The deep learning process model under the problem string is conducive to the convenient and effective teaching design of front-line teachers.The model uses the teaching process to communicate the design implementation process and deep learning process,which is easy for front-line teachers to understand and put into practice. |