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The current study proposes a computer-assisted instruction (CAI) system built on game design, which aims to increase students' enjoyment, motivation, and immersion. Its main objective is to evaluate the effects of CAI with different interactive interfaces in a learning environment. The authors developed an educational game with a vision-based interface and a keyboard/mouse to compare the differences in children's learning experiences when using different input interfaces. The evaluation of the proposed system was based on the questionnaire findings; the participants are 60 third-and fourthgrade students in Taiwan. The authors addressed the issue of the participants' experience in gender and personal preferences for computer games. Through the questionnaire and data analysis, this study found that a vision-based interface not only attracts the interest of children, but also stimulates their learning motivation. The findings have highlighted the value of the present CAI system with a vision-based interface and confirmed an improvement in learning motivation. Classroom observation indicates that the introduction of a CAI system with a novel interface can be a useful tool for enhancing classroom learning activities.

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