Development a Multiple Skill Practice Management and result feedback System for “Smart Vocational Learning” by using smartphones

In this study, we developed a Multiple Skill Practice Management and results feedback System - sawing and planning. The system can be used for a beginner´s vocational learning. Using this system, learners are able to meta-recognize their own skills without a teacher. This system consists of two parts; learners´ motion sensing part by using smartphones, and store and visualization part of the data. Smartphones are attached to the learner´s body or a tool. In order to investigate the learner´s motion, three axis acceleration sensors and three axis gyro sensors equipped in the smartphones are used. Using the system, learners as well as teachers can grasp how they used a tool and how they moved their body as feedback from result of their own practice. In the visualization part, their results display at same time using various charts and table; line graphs, a radar chart, and numerical data in a table. Our system could decrease a teacher´s work load to teach and students could improve their skill without a teacher.