Abstract
We present the system and the method to support two-way communication using a cellular phone in university classes. The architecture combines the internet, a note PC, a web server, and cellular phones to allow students to response. The teacher will be able to arrange a class suitably because he can know students' responses easily and immediately. This method adopts to use students' cellular phones to take simple questionnaire in a large class. Formerly, to question we have students raise their hands or write their concerns on paper. But it is troublesome and takes a long time to count students' raised hands. Using our system and method, we can know the result easily and immediately after students respond. It gives advantage for teachers to arrange the way to teach more suitable, because a teacher can know how much knowledge students have about a lecture.
