We developed a prototype of a safety education system for fields of "child injury prevention," "environmental safety engineering," and "emergency nursing education." Through trials in each field, we obtained knowledge about the types of information presented in the system, the appropriate form of linking with the safety information database, and what devices are appropriate for use in the field. By integrating these results, we designed the active functions that the safety education system should have, including the mental state estimation engine. Also, as a translator of "MoodleDocs Japanese" https://docs.moodle.org/ja, we translated more than 600 pages from the English version and provided information widely to users who use Moodle in Japanese.