Various sports have started to use tablet devices and sports devices for training. The purpose of this study is to clarify the difference in the effectiveness of direct instruction and video-based instruction for improving tag rugby skills. Direct instruction consisted of demonstrations of passing and catching, and video-based instruction consisted of instructional videos and delayed videos of passing and catching. To verify the results, sports data from GNSS (Global Navigation Satellite System) devices was used. Since GNSS devices can easily acquire sports data (movement, speed, acceleration), we tried to check for changes in distance moved and playstyle as a result of improving passing and catching skills. From applying this study to about 130 third-grade elementary school students, we found that both direct and video-based instruction improved their motions, such as the shape of their hands when receiving a pass and the direction of their arms after passing the ball. In addition, there was a significant result in the number of accelerations per minute from video-based instruction.
