The development and application of computer technologies have allowed presentation support systems to be realized for a variety of purposes. In addition, globalization has increased the importance of non-native language presentations. The design of a presentation support system needs to take into account the differences between native and non-native speakers. To investigate such a design, twenty-two graduate students participated in a scenario-based experiment using an observation system. The results show that (1) the speaking volume of Chinese students as non-native speakers may differ than that of native speakers, (2) the height and eye rotation of the participants may influence the change in the head angle, and (3) the combination of a body direction of more than 30 degrees and the arm pattern may be applicable for determining the presenter's interaction with the projection screen.
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