The authors are developing and using a fill-in workbook system that allows faculty members to ascertain the attitude of all students to classes including students who are not active, and to improve lectures through well-timed and appropriate actions. In this paper, in order to help teachers improve lessons and teaching materials, and to help students review their own learning attitude, we propose functions for retrospective review. We focus on unfocused time, page transitions, number of keyboard operations and number of mouse clicks to extract the learning attitude of each student during the class. This function divides student's learning attitude into five categories, i.e. following the class and concentrated on it, following but not concentrated, jumping ahead, falling behind, and not participating. The system also provides visualization of changes in learning attitude during the class. It can be used for teacher's and students' retrospective review after the lecture.