Supporting system to grasp misunderstandings by quiz in large class — Support for observation by walking

Observation by walking is an effective way to grasp misunderstanding students. Teachers observe students by walking between students especially during exercise. Though the effectiveness of the observation, it is hard for teachers to make effective support to troubled students during the exercise in large class. In this article, we aim to develop a supporting system to bring teachers awareness for troubled students. Especially, the system support observation by walking within quizzes in large classes. The proposed system provide simple interface to grasp troubled students who use a specified phrase in their answer. We show the effectiveness of the proposed system by simple experiments. Subjects can grasp the rough number of troubled students quickly and precisely.