The purpose of this study was to determine the effect of oral communication skills and feedback on performance in speech performance. The participants comprised Thirty-four34 high school students participated in this a Science, Technology, Engineering, Arts, and Mathematics (STEAM) research & and education program. Baseline evaluations were performed by theusing a speech ability test with 10 categories. A Pphotoplethysmography (PPG) was recorded during the rest and speech stages along with a video recording of the speech performance. The Results results showed revealed that the subjects with PPG feedback revealed showed a significant improvement in speech performance as well as anxiety states compared to those without PPG feedback. The Those rresults suggest that visualization of the anxiety profile with PPG can be a better educational strategy in oral communication education.