Interface to grasp misunderstandings for teachers in

In this paper, we discuss the interface of elearning systems that make teachers to grasp students’ misunderstandings quickly in quizzes. Teachers need to grasp students’ misunderstandings to make their lectures effective. One of effective method for it is a quiz, which means a simple paper test. Though it is effective, it is troublesome for teachers to distribute answer sheet, collect them, read them, and so on. We aim to develop an e-learning system to reduce the load of teachers in the quiz. Especially, we aim to reduce the load to read answers. There are many answer types of quizzes: multiple choice, descriptive answer, and so on. We focus on a short descriptive answer style. It is effective to grasp misunderstandings, since it force students to answer by their own words. On the other hand, it is hard for teachers to read all answers quickly, since descriptive answers have a various expression and format. In our previous work, we proposed the basic system to reduce the load. In this paper, we enhance the system. The previous system provides answer even before their submission, and teachers can find clues of misunderstandings quickly. Though the previous system is effective, it brings teachers heavy loads that are caused by frequent update of the screen. The new system provides two views: a list of all answers including incomplete ones, and a partial list of answers that have similar words. Teachers can point a focused answer or keyword easily with proposed interface, and get a list of similar answers. It keeps the effectiveness of the previous system, and reduces the heavy load by the partial list. As a result, teachers can improve their lectures even in their lectures. Keywords— e-Learning, descriptive answer style quiz, text mining