Abstract
Homework, traditionally done with pencil and paper, can be an effective means of helping students to consolidate what they have learned. When students have problems, some fortunate ones may have immediate assistance from their parents, siblings, or others who act as human tutors. However, most of them have to wait until the next day before they can ask for their teachers' help, so while they are doing their homework, they must resort to other means of overcoming any difficulty which, if unresolved, may become sources of later errors [1]. It would be desirable if a personal tutor could be made available to help each student when they encounter homework problems.
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