To learn how to manipulate the interface before selflearning
by CAI is additional load for the learners by CAI.
Therefore, the authors have tried to use natural verbal
conversation as the interface of CAI, because the computerized
voice processing has been upgraded these days. But in order to
realize such CAI as effective as the teacher’s teaching students in
the conventional classroom, there are major issues as follows;
In the classroom, teachers normally give lectures using
blackboard and text by reading themselves or sometimes let
students read, give questions to check whether the students
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understand the contents, and on the other hand of teacher’s
guiding, sometimes student raises questions to teacher and then
teacher will answer the student. Then how should we implement
such teacher’s role in the computer?