行動式影音教學系統在混合教學上之實作研究

An Action-type Digital Broadcasting System for Supporting Learning Activities

本研究發展與應用行動式影音廣播教學系統支援班級教學活動。行動式影音廣播教學系統能方便教師提供遠端學生具有高品質的多媒體教學檔案，遠端學生可以聽到課堂上教師的講解過程，清楚地看到教室裡的教學情境與教材內容，使學生能即時參與班級教學活動，學生也可以在下課後隨時隨地下載教師所提供的多媒體錄影檔案。研究結果顯示，利用此多媒體教學檔案，可以幫助學生清晰地回憶當時課堂上的教學情境，方便學生憶起或重新思考教師的解題技巧，能有效提升學生的學習感知成效。

This study develops an action-type audio and video learning system to support classroom teaching and learning activities. With the increase in network bandwidth， live broadcast and video-on-demand are becoming increasingly popular services. The system can immediately broadcast the facial expression of participants and the content of script for distance learning. It integrates various video and audio devices and make output screen simultaneously present more than two video frames and mixed audio. The live broadcast and the video-on-demand are both provided within this system and let viewers watch high-quality films for student's self-learning at any time and anywhere. Therefore， the discussions and illustrations of teacher and students can be perfectly displayed to the viewers who are not able to participate in this class. In conclusion， the applications in learning with the system achieve excellent outcomes.