Analysis on Accurate Early Warning and Intervention Model of Blended Learning in Ideological and Political Courses Based on Learner Portrait

To improve the teaching effect of ideological and political courses, learning early warning and intervention is the key to it. On the basis of learning analysis, this paper puts forward the process and principle of constructing learner portrait, and design the “BILDES” six-side learner portrait model, which includes six dimensions: basic information, internal characteristics, learning style, learning behavior, emotional attitude and social interaction. Based on the portraits of learners, an accurate early-warning and intervention model of blended learning of ideological and political courses is constructed from the theoretical level. In the earlywarning mode, warnings are given to students through red lights or green lights, emails, digital dashboards and news push. In the intervention mode, systematic automatic intervention and manual intervention are combined. Through accurate identification, effective early warning, accurate and individualized intervention, the learning crisis can be effectively resolved and the quality of ideological and political courses can be improved.